[SOLVED] Windows Guest VM in QEMU with OVMF freezing on boot

I'm having some issues booting Windows 8.1 with ovmf. I've taken out the references to vga passthrough for debugging this issue. This is a fresh installation, I have a separate installation that works just fine (albeit bloated), and I don't know where the difference comes.
The command I used:
# qemu-system-x86_64 -enable-kvm -m 4G -cpu host -M q35 -balloon virtio \
-drive if=pflash,format=raw,readonly,file=/var/lib/libvirt/images/ovmf_x64.bin \
-drive if=pflash,format=raw,file=/var/lib/libvirt/images/ovmf_vars_x64.bin \
-smp 6,sockets=1,cores=6,threads=1 -net nic,model=virtio -net bridge,br=br0 -name win8 \
-device virtio-scsi-pci,id=scsi \
-device ioh3420,bus=pcie.0,addr=1c.0,multifunction=on,port=1,chassis=1,id=root.1 \
-drive file=/var/lib/libvirt/images/Win8.1Base-OVMF.cow,id=disk,format=qcow2,if=none -device scsi-hd,drive=disk \
-drive file=/usr/share/virtio/virtio-win.iso,id=virtiocd,if=none -device ide-cd,bus=ide.1,drive=virtiocd
I have tried his with ovmf-svn and Gerd Hoffman's repository, both giving the same effect.
It starts to boot for a while, and then freezes at a point like this:
EDIT: When I take out references to the q35 chipset, including the ioh3420 device, it will boot.
EDIT 2: After I installed the driver for my nvidia card (the point of this from the beginning), I was then able to boot with q35 chipset again. Wahoo!
Last edited by noctlos (2015-04-30 20:47:06)

Oh, thank you so much. That fixed it!
You did not posted any boot error [...]
Well, I posted the screenshot ("output of the VM"), because I couldn't copy the text from the VM. And I guess I was too lazy to type... It contains the boot error.
Edit: In order to eventually help people find this, I'm typing the error partially, here:
:: Mounting /run/archiso/cowspace (tmpfs) filesystem, size=75%...
losetup: cannot find an unused loop device
:: Mounting '' to '/run/archiso/sfs/airootfs'
Waiting 30 seconds for device...
ERROR: '' device did not show up after 30 seconds...
Falling back to interactive prompt
You can try to fix the problem manually, log out when you are finished
sh: can't acces tty; job control turned off
[rootfs /]#
Last edited by rebootl (2014-11-16 09:32:50)

Similar Messages

[Solved] No sound from VM (Windows 7) on qemu with virt-manager

I posted this in Newbie corner,
https://bbs.archlinux.org/viewtopic.php?id=176131
but let me re-post here becase it is about sound matter.
I have installed Windows 7 (64bit) on qemu with virt-manager.
It seems that audio works fine inside the guest os, but I can hear no sound.
[Guest]
Guest os: Windows 7 (64 bit)
Sound driver: ich6
Console: Spice (VNC doesn't work.)
[Host]
linux 3.12.8-1 (base)
qemu 1.7.0-1
virt-manager 0.10.0-4
libvirt 1.2.1-1
According to
https://bbs.archlinux.org/viewtopic.php?id=157604
I did as follow before launch the VM, but it doesn't solve the problem.
export QEMU_AUDIO_DRV=alsa
What shoud I check and do?
Followings are some additional information:
* If I put the same command above
% /usr/sbin/qemu-system-x86_64 -name win7qemu002...
It produces error.
char device redirected to /dev/pts/4 (label charserial0)
Could not access KVM kernel module: Permission denied
failed to initialize KVM: Permission denied
* According to the someone's discussion,
I added my user to kvm group
% sudo gpasswd -a taro kvm
or edited /etc/libvirt/qemu.conf, but they don't fix this errors.
% sudo vi /etc/libvirt/qemu.conf
- #user = "root"
+ user = "taro"
* Everytime I launch the virt-manager,
a dialog "Authentication" pops-up and asks
for my user password (not root password).
% ps aux | grep kvm [~]
root 252 0.0 0.0 0 0 ? S< 02:25 0:00 [kvm-irqfd-clea
n]
nobody 10199 63.0 27.0 1613768 1070088 ? Sl 11:31 0:34 /usr/sbin/qemu-system-x86_64 -name win7qemu002 -S -machine pc-i440fx-1.7,accel=kvm,usb=off -m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 00b5056b-9055-aa4f-d7a6-aef72cc8edd4 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7qemu002.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -boot menu=off,strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive file=/mnt/win/win7qemu002,if=none,id=drive-ide0-0-0,format=raw -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=22,id=hostnet0 -device e1000,netdev=hostnet0,id=net0,mac=08:00:27:8f:ff:84,bus=pci.0,addr=0x7,bootindex=1 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x3 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
root 10201 0.0 0.0 0 0 ? S 11:31 0:00 [kvm-pit/10199]
taro 10340 0.0 0.0 10668 1060 pts/2 S+ 11:32 0:00 grep kvm
Last edited by taro (2014-02-15 12:36:43)

Self reply.
Finally, I got to hear sound from windows 7 as guest OS.
I gave up to use virt-manager and launches OS image by command line
like follows.
% export QEMU_AUDIO_DRV=alsa
% qemu-system-x86_64 /mnt/win/win7qemu002 -cpu kvm64,+nx -enable-kvm -m 1536 -soundhw hda -usb
Then, sounds works good.
# However, the quality is bad because of heavy CPU load.
Virt-manager may make things complex..
Sorry for the duplicated post.
https://bbs.archlinux.org/viewtopic.php?pid=1373935
Last edited by taro (2014-02-15 12:36:19)

No sound from VM (Windows 7) on qemu with virt-manager

I have installed Windows 7 (64bit) on qemu with virt-manager.
It seems that audio works fine inside the guest os, but I can hear no sound.
[Guest]
Guest os: Windows 7 (64 bit)
Sound driver: ich6
Console: Spice (VNC doesn't work.)
[Host]
linux 3.12.8-1 (base)
qemu 1.7.0-1
virt-manager 0.10.0-4
libvirt 1.2.1-1
According to
https://bbs.archlinux.org/viewtopic.php?id=157604
I did as follow before launch the VM, but it doesn't solve the problem.
export QEMU_AUDIO_DRV=alsa
What shoud I check and do?
For additional information,
% ps aux | grep kvm [~]
root 252 0.0 0.0 0 0 ? S< 02:25 0:00 [kvm-irqfd-clea
n]
nobody 10199 63.0 27.0 1613768 1070088 ? Sl 11:31 0:34 /usr/sbin/qemu-system-x86_64 -name win7qemu002 -S -machine pc-i440fx-1.7,accel=kvm,usb=off -m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 00b5056b-9055-aa4f-d7a6-aef72cc8edd4 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7qemu002.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -boot menu=off,strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive file=/mnt/win/win7qemu002,if=none,id=drive-ide0-0-0,format=raw -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,id=drive-ide0-1-0,readonly=on,format=raw -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=22,id=hostnet0 -device e1000,netdev=hostnet0,id=net0,mac=08:00:27:8f:ff:84,bus=pci.0,addr=0x7,bootindex=1 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x3 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
root 10201 0.0 0.0 0 0 ? S 11:31 0:00 [kvm-pit/10199]
taro 10340 0.0 0.0 10668 1060 pts/2 S+ 11:32 0:00 grep kvm
* If I put the same command above
% /usr/sbin/qemu-system-x86_64 -name win7qemu002...
It produces error.
char device redirected to /dev/pts/4 (label charserial0)
Could not access KVM kernel module: Permission denied
failed to initialize KVM: Permission denied
* According to the someone's discussion,
I added my user to kvm group
% sudo gpasswd -a taro kvm
or edited /etc/libvirt/qemu.conf, but they don't fix this errors.
% sudo vi /etc/libvirt/qemu.conf
- #user = "root"
+ user = "taro"
* Everytime I launch the virt-manager,
a dialog "Authentication" pops-up and asks
for my user password (not root password).
best regards.
Last edited by taro (2014-06-29 02:54:25)

I'm having the same issue. Not running Windows though... I have a minimal Ubuntu 14.04 as the guest (Arch as the host.) Been trying everything I can think of but I can't get any sound in virt-manager. Like you said, the sound seems to play OK in the guest, it's recognizing the card, volume is turned up but no sound. It has to be an issue with my host configuration but I'm not sure what. I can get sound to play in the same guest if I launch qemu directly and use ac97. Something's gotta just be misconfigured with virt-manager/libvirt/Spice. I thought a permissions issue at first since by default it runs as the "nobody" user but I even tried the foolish thing of setting /etc/libvirt/qemu.conf so qemu runs as root... still no go. I'd really like to use virt-manager for the nice GUI, presistant settings, and extra features like Spice and the QXL driver that enables KMS on the guest.

Windows Guests - OVM vs VMware?

Which one is the best for Windows Guests? Is it OVM or VMware. I have heard from one of my customer that Windows guests on OVM show poor performance esp when it is run over NFS volumes. The performance would be better using VMware.
In our environment, there are some Windows guests deployed in OVM using LUNs. I would like to know what specific combination gives good performance(at least no slowness) for running RDBMS, and other applications in the Windows Guests. I would like to promote OVM over VMware.
My typical deployment would be - a 32/64 bit Windows 2003/2000 server guests running off an NFS volume backed block device. The RDBMS and other middle tier will also come from the same NFS volume probably with a different disk file attached.
I read in the documents that Windows guests cannot be created with paravirtualization enabled. In that case, what would be the purpose of Oracle VM para-virtualized drivers for Windows? Does installing Windows using hvm require para-virtualized drivers?

An ordinary install of Windows on OVM will show inferior performance because it will be running in fully-virtualized HVM mode. To get optimal performance, you need to install the para-virtualized device drivers and reconfigure for PVM mode.
Get the instructions and drivers from http://download.oracle.com/docs/cd/E11081_01/doc/doc.21/e15298/toc.htm site. Or, to bypass all the verbiage, fetch the drivers from the edelivery.oracle.com site.
Using these PVM drivers will make a significant difference.

[SOLVED] Qemu with host networking space.

Hello, I'm trying to lunch Qemu with host networking, so the VM's can talk to each other, what I did so far is creating the following bridges ( Actually virt-manager did that for me ):
br0, virbr0 -> virbr0-nic ( the interface )
and have the following network interfaces:
br0, lo, virbr0, wlp1s0
What I think I'm missing is something on the code... I'm lunching with:
qemu-system-x86 -kernel kernel -cpu host -m 2024 -hda image.image
I did review the following manuals
https://wiki.archlinux.org/index.php/QE … networking
https://wiki.archlinux.org/index.php/Network_bridge
I'm missing the right command, thanks.
Last edited by abdullah (2015-02-06 18:00:11)

abdullah wrote:
Well, still trying, here is the code that I'm using right now:
./start.sh
#!/bin/bash
bridge=br0
tap=$(sudo tunctl -u $(whoami) -b)
sudo ip link set $tap up
sleep 1s
sudo brctl addif $bridge $tap
qemu-system ..... etc \
-net nic,vlan0,model=virtio,macaddr=00:16:35:AF:94:4B \
-net nic,vlan=0,ifname=$tap,script=no,downscript=no
sudo brctl delif $bridge $tap
sudo ip link set $tap down
sudo tunctl -d $tap
which the reff was in https://activedoc.opensuse.org/book/ope … h-qemu-kvm
any help please?
Sorry if I am late to the party... but here's how I do this with bridged networking.
Let's assume that I have 2 guests, an ArchLinux and Window 7. These are the start scripts:
: cat start-arch.sh
#!/bin/bash
vm_dir="/export/scratch/VMs"
scripts_dir="${vm_dir}/scripts"
. ${scripts_dir}/macaddr-gen.sh
# Generate a random MAC address
gen_macaddr mac
# Start the emulator
qemu-system-x86_64 -enable-kvm -smp 2 \
-net bridge,br=br0 -net nic,macaddr=${mac},model=virtio \
-drive file="${vm_dir}/arch-x86_64-1",if=virtio -nographic
: cat start-win7.sh
#!/bin/bash
vm_dir="/export/scratch/VMs"
scripts_dir="${vm_dir}/scripts"
. ${scripts_dir}/macaddr-gen.sh
# Generate a random MAC address
gen_macaddr mac
# Start the emulator
qemu-system-x86_64 -enable-kvm -m 3G -smp 2 \
-net bridge,br=br0 -net nic,macaddr=${mac},model=virtio \
-drive file="${vm_dir}/win7-x86_64-1",if=virtio \
-usbdevice tablet -vga qxl -spice port=5930,disable-ticketing
: cat macaddr-gen.sh
#!/bin/bash
# Generate a random MAC address
gen_macaddr() {
local str i macaddr _mac=$1
str=$(cat /dev/random | tr -cd '[:xdigit:]' | head -c 12 | \
tr '[:upper:]' '[:lower:]')
i=0
macaddr=""
while [ $i -lt 6 ]; do
macaddr=${macaddr}${str:0:2}":"
str=${str:2}
let i=i+1
done
eval $_mac=\${macaddr%:}
: cat /etc/qemu/bridge.conf
allow br0
Note, that the MAC addresses of virtualized NICs in the VMs must be different. If you now do
: ./start-arch.sh &
: ./start-win7.sh
Assuming that you have already set up a bridge br0, qemu will create several tap? interfaces and insert them into that bridge (using the qemu-bridge-helper suid binary), and you'll have a virtual LAN rooted at br0.
EDIT: Added a slightly faster random MAC generator and comments.
Last edited by Leonid.I (2015-02-09 20:13:50)

Unable to create Windows Guest

Hello,
I have OVM Server 2.2 (2.6.18-128.2.1.4.9.el5xen), running ovs-agent-2.3-31. I have OVM Manager installed on OEL 5.3 x64.
I am able to create an OEL 5.3x64 guest via ISO file with no issues.
I am not able to create a Windows 2003 32bit or 64bit guest. I have been searching here, metalink, google... but not finding what the issue might be (though I have found useful information).
Looking at log files:
/var/log/ovs-agent/ovs_operation.log --> reports success
/var/log/ovs-agent/ovs_root.log --> reports success
/var/log/xen/qemu-dm-72_bbrookodr10.log reports issue (unfortunately not sure what it means):
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
xs_read(/local/domain/0/device-model/3/xen_extended_power_mgmt): read error
medium change watch on `hdc' (index: 1): /var/ovs/mount/59879345C1BA460ABAE535A6FA9C1FCE/iso_pool/W2k3sp2x64/w2k3sp2x64.iso
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
cirrus vga map change while on lfb mode
mapping vram to f0000000 - f0400000
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is ro state.
I believe this is the cause for my issue because it is unable to create the VM completely, which causes it to poweroff. And as I see in the /var/log/xen/xend.log
XendDomainInfo.create says to destroy if poweroff.
Any thoughts on what I am missing?
Thanks.
UPDATE:
Apparently I am not using the correct Windows Iso File. I just talked to my Windows admin. This is the SP2 ISO, but still need the Base ISO first. USER ERROR!!!!
Edited by: user634761 on Feb 17, 2010 9:57 AM

So the error was using the wrong ISO file.

Windows Server 2008 black screen with mouse *PLEASE HELP*

Hello fellow techs,
I have been tearing my hair out for the past 12hrs on this issue.
About 3 weeks ago, one of our clients reported that they were experiencing
issues on the network so one of the staff went into the server room and noticed
the screen was black with only the cursor. As they couldn't reboot, they
decided to hold the power button to power it off. When they powered it back
up, it went passed the windows loading
splash screen, and again the screen is black with
the mouse pointer in the center of the screen.
I am diagnosing the server and find that at the black screen, I’m able to move
the cursor and beyond that nothing happened. I started in safe mode with the
exact same results.
I have been trying many different solutions from posts that I have found in
Google but no change.
From other machines you can type \\servername in
the run box and see the shared folders, as well as ping it.
This is a very urgent request as I need to have the Server back up and running
by tomorrow.
I am quiet willing to pay for phone support with anyone that can assist as soon
as possible. I am happy to transfer founds via Paypal.<o:p></o:p>
PLEASE HELP!

Hi,
I agree with sm, you should give us more details. Also you should use sfc /scannow
command to scans the integrity of all protected system files and repairs files with problems when possible. For more details, please refer to the following article.
Sfc
http://technet.microsoft.com/en-us/library/ff950779.aspx
Before going further, would you please let me know whether there were any changes on the affected server? Has windows update or any new device been added? Please also check your shadow copies.
The Windows Server black screen may be caused by them.
In addition, there are similar questions, please refer to.
Windows Server 2008 black screen
http://social.technet.microsoft.com/Forums/en-US/463b529b-26a6-4d5d-88f5-7d8b3460d165/black-screen-windows-2008-r2
Windows Server 2008 and the Black Screen of Waiting
http://projectdream.org/wordpress/2009/03/03/windows-server-2008-and-the-black-screen-of-waiting/
By a way, you also can be able to boot into last know good configuration to solve the trouble. You can refer to the following similar question that provide the detailed operations.
Windows Server 2008 black screen with only the mouse pointer showing
http://social.technet.microsoft.com/Forums/en-US/5c878af8-78f2-430d-9530-a0e5ad73ff03/windows-server-2008-black-screen-with-only-the-mouse-pointer-showing
Hope this helps.
Best regards,
Justin Gu

Color Laserjet 4500 on Windows 7 - 64 bit Share with XP - 32 bit Need Additional 32-bit Drivers

Here's the setup:
Desktop: Windows 7 Professional - 64 bit with Color Laserjet 4500, shared, connected and working fine. The name of the driver is HP Color LaserJet 4500 PCL 5.
Laptop: Windows XP Professional - 32 bit.
No network problems. Laptop sees the printer, but can't connect without the correct additional 32-bit drivers installed on the desktop. The only drivers I've been able to find are listed here. When I try to add under host printer properties/sharing/additional drivers, none of the downloaded .inf files are accepted.
Since Windows 7 installed a perfectly good 64-bit driver, there must be a compatible 32-bit driver that cab be added to allow the XP laptop to connect to this printer- but I have not been able to find it!
Any help or suggestions will be greatly appreciated!
Rob
This question was solved.
View Solution.

I would suggest installing the PCL6 driver on your XP machine, then on the XP machine do the following: Start, Settings, Printers and Faxes, Add a Printer, Next, Local Printer, Next, Create a Port, Local Port, \\Computername\Printername (use the actual share name for the computer and printer), OK, Have Disk, point to the directory where the driver was installed (default C:\clj4500pcl6win2kxp).
Bob Headrick, HP Expert
I am not an employee of HP, I am a volunteer posting here on my own time.
If your problem is solved please click the "Accept as Solution" button ------------V
If my answer was helpful please click the "Thumbs Up" to say "Thank You"--V

How to Solve Windows 8 Metro App Crash on Macbook Pro 2010 13"

There is a known problem
(See http://www.onebitzero.com/how-to-fix-metro-apps-from-crashing-under-nvidia-beta- driver-296-17-in-windows-8/ )
that many notebooks equipped with nVIDIA GPU and running Windows 8 will crash some Modern UI (Metro) apps,
including Game, Camera, Remote Desktop, ... apps.
My MacBook Pro 2010 13" has an nVIDIA GeForce 320M.
I installed Windows 8 Pro RTM gotten from DreamSpark Premium and Boot Camp Software 3.2 on my MacBook Pro.
Unfortunately, I met the Modern UI app crash problem.
I fought against this problem two days and almostly surrended.
Unbelievablely, I could solve it.
Yes. We can simply solve the crash problem by installing the latest 301.42 driver download from nvidia.com.
But it is not perfect: we will find we can't adjust the brightness anymore.
I also tried many methods, including modifies .inf files and change permissions but all are failed.
Except one for which I got an idea from Windows Event Viewer.
I found I got an error event when I launched the problematic Modern UI app. For example,
"Faulting application name: wwahost.exe, version: 6.2.9200.16384, time stamp: 0x50107c6e
Faulting module name: nvd3dumx.dll, version: 8.17.11.9682, time stamp: 0x4b884f8a"
(Attention! The following steps are at your risks.
Or you may not try it.)
The steps to solve the crash problem and simultanously preserve the brightness adjustment function are:
1. Download the latest 301.42 driver from nvidia.com. Then, click it to extract files to C:\
and we don't install it.
2. Copy the Boot Camp nVIDIA driver files from "13-inch MacBook Pro Mac OS X Install DVD,"
ie. this folder:
(DVD drive):\Boot Camp\Drivers\NVidia\Vista-Win7_64
3. Replace the older nvd3dumx.dl_ with the newer one.
I.e. overwrite
Boot Camp\Drivers\NVidia\Vista-Win7_64\nvd3dumx.dl_
by
C:\NVIDIA\DisplayDriver\301.42\WinVista_Win7_64\International\Display.Driver\nvd 3dumx.dl_
4. Follow this tutorial to turn off driver integrity check:
http://www.killertechtips.com/2009/05/05/disable-driver-signing-windows-7/
and reboot.
5. Install the modified driver by clicking
Boot Camp\Drivers\NVidia\Vista-Win7_64\setup.exe
6. Reboot your computer and good luck.

The method described above is too complex.
I found a more easy way to solve the Modern app crash problem.
That is to download the legacy driver 296.10 here
http://www.geforce.com/drivers/beta-legacy
Unfortunately, 296.10 and 19x don't solve all problems on Windows 8:
https://discussions.apple.com/thread/4370420

My Macbook Pro has a black screen when running in Bootcamp Windows 7. Since I updated the mac side my windows side now starts up with completely black screen - no prompt, nothing, Cap keys still light up as does mouse and DVD drive seems to run.

My Macbook Pro has a black screen when running in Bootcamp Windows 7. Since I updated the mac side my windows side now starts up with completely black screen - no prompt, nothing, Cap keys still light up as does mouse and DVD drive seems to run.
Will not show up in safe mode, will not show when started from Windows 7 DVD.
I suspect the Mac update wiped out my PC video drivers but can not think of a way to re-install?
Can see the PC volume from Mac side with files.
I've looked at all the online solutions so far and have tried most of them without success. Please help!
Specs:
2009 Macbook Pro, 3.06 GHz Intel 2 core, Max 10.6.8.
Model Name:          MacBook Pro
Model Identifier:          MacBookPro5,2
Processor Name:          Intel Core 2 Duo
Processor Speed:          3.06 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          6 MB
Memory:          4 GB
Bus Speed:          1.07 GHz
Boot ROM Version:          MBP52.008E.B05
SMC Version (system):          1.42f4
Serial Number (system):          7302300GANE
Hardware UUID:          B2D4B4B4-CD92-5C7A-BDC2-527D30DD8DF3
Sudden Motion Sensor:
State:          Enabled

EDIT: RESOLVED
For anyone else who finds their way here like I did, this link did it for me: https://forums.geforce.com/default/topic/527599/windows-8-issues-solved-please-r ead-if-you-39-re-having-black-screen-and-or-flickering-/
Specifically, the posts by Dunsany and valkyr did the trick. I booted in safe mode, uninstalled and deleted the Nvidia driver, disabled automatic driver installation, and restarted normally. I then manually downloaded and installed the previous Nvidia driver for my graphics card (which at the time of this writing was 335.23, rather than the latest which was 337.88), and everything is now bueno!
Two hiccoughs along the way: First, when I tried to uninstall the Nvidia driver the first time, when I restarted I got the login screen (which was a good sign), but it quickly went black again. I powered down, restarted in safe mode again, and repeated the uninstallation process, and it worked the second time. Second, when I started the manual install of the 335.23 driver, the computer played a sound similar to the one for disconnecting a USB device, and the screen went black. I'd seen a lot about trying to increase the brightness (though it hadn't worked up to this point; but if you haven't tried it yet, might as well); I tried it, and it worked! So far I'm back up and running. [/fingers crossed]
Hope this helps someone else!

Windows 8.1 Compatibility Problem With CP1518

I have an HP LaserJet CP1518ni printer that I purchased 2 or 3 years ago. We recently had our previous computers MOBO go out on us and had to replace our computer. I decided to purchase a machine with Windows 8.1. When I tried to install my printer, it will not recognize the printer at all. I have tried installing/uninstalling, different drivers, the DOT4 communications software, everything that I can think of. It just won't communicate with the computer. In searching the internet, I have found two different places on HP's website that it discusses compatibility. In one place, it says that it is USB and Networking compatible with Windows 8.1 and refers me to the Universal Print Driver. In the other place, it is shown in a table that says my printer is not compatible with Windows 8.1. I would hope that this is not the case, as the printer is not that old and was fairly expensive to purchase for a home office. Has anyone had this issue with compatibility with Windows 8.1? And, has anyone found a way to get Windows 8.1 to communicate with the printer?

Hi ClarkUELS,
Welcome to the HP Forums.
I see that you are having a bit of an issue attempting to install the printer on to your Windows 8.1 computer.
I suggest that you start from scratch and turn the printer on and the computer on. Connect the usb cable to the computer and then the printer. You will then see a Found New Hardware connection. Go ahead and run the add a printer and select the CP1510 series. This is a generic print driver and once it is installed you should be able to print with no issues.
If the troubleshooting does not help resolve your issue, I would then suggest calling HP's Technical Support to see about further options for you. If you are calling within North America, the number is 1-800-474-6836 and for all other regions, click here: click here.
Thanks for your time.
Click the “Kudos Thumbs Up" at the bottom of this post to say “Thanks” for helping!
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
W a t e r b o y 71
I work on behalf of HP

Outlook2013 email message goes behind main Outlook window when opening PDF attachment with Reader 11

Problem statement: Outlook 2013 email message goes behind main Outlook window when opening PDF attachment with Adobe Reader 11.0.3
Environment: Windows 8 x64; Office 2013; Adobe Reader 11.0.3
Steps to reproduce bug:
1. Open Outlook 2013
2. Open email message with PDF attachment
3. Open PDF attachment (with Adobe Reader as default PDF viewer)
4. Close Adobe Reader
Results: Original email message with PDF attacment now sits behind the main Outlook window
Expected results: Original email message should be on top of main Outlook window as it was when opening the PDF attachment
Note: Adobe Acrobat Profession performs as expected - the original email is on top of the main Outlook window - This only seems to be a problem with Adobe Reader.
Has anyone else experience this problem? If so, have you found a work-around?
Thanks,
Mike

From: new window opens behind existing window - how to modify?
I had this problem happening in Outlook.
If I tried to open an email, it would open behind the main Outlook window.
The same happened if I opened a link in the email - it would open behind the mail.
The fix that was suggested to me was so simple that I still don't believe it.
Right click on the task bar and unlock the taskbar, then lock it again.
Close down Outlook and re-start it.
Problem solved! Just dont know how or why.
Proposed as answer byalfreelandTuesday, January 08, 2013 4:52 PM
It worked for me with Win 7 and OL 2003. Why? Who cares ... It is working.
Liviu 2014-09-17

Lost windows vista cd that came with laptop

Hey guys,
i own a t500 and i have lost my windows vista cd that came with it. I had planned to reformat my computer. What are my options to get a new copy of this cd? and lets say i wanted to upgrade to windows xp or 7, then which version would I need?
Thanks a ton guys, i appreciate it.
Solved!
Go to Solution.

You probably made your own recovery discs for the laptop using the Rescue and Recovery restore disc creation wizard, which only allows you to make one copy of the discs (unless you made additional copies afterwards).
You can buy restore discs from Lenovo for Vista, but I would personally just go up to Windows 7; it's significantly better than Vista. If you were to upgrade to 7, you COULD get a set of Vista restore discs + a Windows 7 upgrade disc, or you could just go straight for a retail, full Windows 7 disc. (There are ways of getting an upgrade disc to work without having Vista installed; you'd need the OEM CD-Key on the sticker under your laptop, assuming it hasn't been worn away).
If you want to go back to XP, you could go for Vista/7 Professional with XP downgrade, which is more roundabout than the Vista+7 update, so you're better off getting some sort of XP restore discs or a retail copy of XP.
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

BSOD KMODE_EXCEPTION_NOT_HANDLED on 10041 in KVM with OVMF

First, the crash dumps: http://1drv.ms/1GJxoRC (sorry about the non-English (Swedish) in there)
In my admittedly experimental setup that has so far been working unexpectedly well and stably, I started getting BSODs on launching a number of applications once I had updated to 10041. It is 100% reproducible and says KMODE_EXCEPTION_NOT_HANDLED*.
Every time I start Spotify (latest version), the crash happens instantly. In fact, I even get the blue screen when I try to uninstall it or download and run the installer (simple way of reproducing). This is by no means isolated to Spotify. Dark Souls II always
crashes the same way about one second into the first screen, often with visual distortion, making the BSOD unreadable. I reinstalled Windows Preview to another partition, and experience exactly the same behavior. On build 9926 everything is perfectly fine,
but once I upgraded that to 10041, the problems were back. I then reverted the update, and it's all good. But I can go back and test things, as one of the partitions i still on 10041.
Anyway, unless those crash dumps have all the info one could need, some context on my setup might be useful. I run the preview in a VM, using KVM on Linux, with OVMF (essentially turns the VM into a UEFI machine). I've been using GPU pass-through,
passing my Radeon HD 6970 over to windows, plus a few USB devices. I thought that might have been the problem, but I've tried running the VM without passing it through, and the same thing happens anyway. Maybe that's not enough to rule it out...
The VM uses a physical SSD rather than a disk image, so I can actually boot straight into it when I boot up the computer! When I do that, I don't experience the blue screens.
* There's been one occurrence of SYSTEM_SERVICE_EXCEPTION, when starting Dark Souls II, but I don't have the dump from that.

Alright, never mind. 10049 fixed it! So thanks for the impossibly quick support, hehe!

Windows 7 doesn't awaken with Ipod Nano 5G connected

Brand new HP computer w/Windows 7 and brand new Ipod Nano 5G. Left ipod connected to computer to charge. After computer powered down it would not restart. HP figured out that the Ipod was blocking the restart. If I unplug Ipod computer restarts fine. Anyone else finding this problem?

I had the same issue with my 5g video awhile back. The computer wouldn't boot with the ipod connected as it was recognizing it as a HD and looking for an OS to load from it.
I solved the problem by going into my BIOS and removing "boot from removable media" from the boot list. I'd give that shot, though not all BIOSs have that as a change able option independently.
-edit-
The specific computer I was having an issue on with this was an HP pavilion a1340n, but the BIOS I had installed was a custom cough*hacked*cough version I was using to install Vista and later 7.
Message was edited by: ledmonk
Message was edited by: ledmonk

[SOLVED] Windows Guest VM in QEMU with OVMF freezing on boot

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