Random black screen while using

Hello!
I'm having some issues with my laptop. It is an Hp Pavilion DV7-1135nr. I understand this laptop in particular has been know to have a lot of issues, but I still wonder if anyone has a solution for this. Just recently my laptops hard drive died so we bought a new one, along with a new fan because that one was dying. We installed the new parts and everything worked fine for a while and then while I was using it it froze up and the screen turned black. I turned off the laptop for a while and tried it again about an hour and a half later. It worked for a while but it did the exact same thing. It was also doing this before we replaced the parts so we just thought it was over hearing from the cruddy fan. Apparently not, because it's still doing the same thing. If anyone has any suggestions on how to fix this, it would be greatly appreciated.
Thank you for your time.

Hi @Sycho56 ,
Thank you for visiting the HP Support Forums and Welcome. I have read about your HP Pavilion dv7-1135nr Notebook and getting a blank or black screen on startup. Try performing a hard reset.
When performing a hard reset please note remove any and all USB devices. Disconnect all non-essential devices.
Here is a link to computer won't start for Windows 7. Windows 8 here.
Here is a document, for when it gets running, it shows you how to do a hardware test.
I recommend to restore the BIOS defaults with this document selecting the reloading the BIOS default settings.
I hope this helps.
Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

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Dear, xxx
Regarding your sound acceleration error and the sound cards you have used, we apologize for the inconvenience you have experienced.
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Re: F.E.A.R. 2 black screen while using Soundblaster X-Fi?
solace wrote:
Pardon me but i'm looking your Quad SLI setup a potential culprit to your problems. Have you tried disabling SLI mode to see if the problem can be resolved?
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While we all have MacBooks in this forum not all of us use BootCamp. There's a BootCamp Support Community where everybody uses BootCamp. You should also post this question there to increase your chances of getting an answer.
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Welcome to Apple Discussions!
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SUDDEN BLACK SCREEN WHILE USING MBP. WHY?!

It has been happening lately... the screen all of a sudden turns black and it forces me to shut it down manually.
Using I-Photo for example, when I zoom in on a picture the screen turns black and there is nothing to do to get the computer back running other than shut it down pressing the power button. It also happened yesterday whilst watching a video on YouTube. It is crashing down too often lately:
The error reads:
Interval Since Last Panic Report: 96937 sec
Panics Since Last Report: 2
Anonymous UUID: 86ED63A6-F09F-4DD4-96ED-6105E66F4389
Tue Feb 8 13:12:42 2011
panic(cpu 0 caller 0x9cdbfa): NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xc0000000 0x7f33b000 0x0a5480a2, D0, P3/4
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x92582118 : 0x21b50c (0x5d4438 0x9258214c 0x223974 0x0)
0x92582168 : 0x9cdbfa (0xbe32bc 0xc53940 0xbf2424 0x0)
0x92582208 : 0xae8640 (0x9248c04 0x9794004 0x100 0x2a358d)
0x92582258 : 0xadf639 (0x9794004 0x100 0x92582288 0x9bd6d7)
0x92582288 : 0x16b09ce (0x9794004 0x100 0x438004ee 0x4fdd1d)
0x925823c8 : 0xb072bd (0x9794004 0x979a004 0x0 0x0)
0x92582408 : 0x9d6e63 (0x9794004 0x979a004 0x0 0x0)
0x925824a8 : 0x9d346f (0x0 0x9 0x0 0x0)
0x92582658 : 0x9d41bb (0x0 0x600d600d 0x7058 0x92582688)
0x92582728 : 0xc7e6e1 (0xc1d00041 0xbeef0003 0xbeef0202 0x10c62500)
0x92582778 : 0xc7e84e (0x4623e000 0x10c62500 0x209fb000 0x0)
0x925827a8 : 0xc56484 (0x4623e000 0x10c62500 0x209fb000 0x0)
0x925827c8 : 0xc7779e (0x4623e000 0x107b2800 0x2 0xf0992)
0x92582808 : 0xc775bb (0x4623e000 0x107b2800 0x92582918 0xca3082)
0x92582838 : 0xc77893 (0x4623e000 0x91c9040 0x107b2800 0x0)
0x92582858 : 0xc9a372 (0x91c9040 0x107b2800 0x0 0x0)
0x92582888 : 0xc98945 (0x46341000 0x4634177c 0x1 0x0)
0x925828a8 : 0xc605a1 (0x46341000 0x4634177c 0x0 0x0)
0x925828d8 : 0xc9a408 (0x46341000 0x92582a1c 0x92582908 0x46341000)
0x92582918 : 0xc648de (0x46341000 0x92582a1c 0x92582a1c 0x92582980)
0x92582a58 : 0xc9dcfe (0x46341000 0x0 0x92582b6c 0x92582b68)
0x92582b08 : 0xc60c93 (0x46341000 0x0 0x92582b6c 0x92582b68)
0x92582b88 : 0x565a88 (0x46341000 0x0 0x92582ddc 0x92582c14)
0x92582bd8 : 0x566327 (0xceee20 0x46341000 0x941b688 0x1)
0x92582c28 : 0x566bdb (0x46341000 0x10 0x92582c70 0x0)
0x92582d48 : 0x285bce (0x46341000 0x10 0x941b688 0x1)
0x92583df8 : 0x21d8ba (0x941b660 0x10c8e5a0 0x1f5080 0xfb07)
0x92583e38 : 0x210a3a (0x941b600 0x0 0xa214770 0x90b51c0)
0x92583e98 : 0x216c9d (0x941b600 0x0 0x0 0x0)
0x92583f18 : 0x294e13 (0x92583f44 0x0 0x0 0x0)
0x92583fc8 : 0x2a1018 (0x9bac7a0 0x0 0x10 0x8b383c4)
Kernel Extensions in backtrace (with dependencies):
com.apple.GeForce(6.2.6)@0xc55000->0xd0afff
dependency: com.apple.NVDAResman(6.2.6)@0x967000
dependency: com.apple.iokit.IONDRVSupport(2.2)@0x95a000
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x927000
dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x938000
com.apple.nvidia.nv50hal(6.2.6)@0x157a000->0x198efff
dependency: com.apple.NVDAResman(6.2.6)@0x967000
com.apple.NVDAResman(6.2.6)@0x967000->0xc54fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x927000
dependency: com.apple.iokit.IONDRVSupport(2.2)@0x95a000
dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x938000
BSD process name corresponding to current thread: iPhoto
Mac OS version:
10J567
Kernel version:
Darwin Kernel Version 10.6.0: Wed Nov 10 18:13:17 PST 2010; root:xnu-1504.9.26~3/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)
I've tried resetting the PRAM and NVRAM, that didn't solve the problem. I also ran the Apple Hardware Test, and it said there were no damages on the Hardware...
Any solution??

ChMBP,
I and others have the same problem with iphoto and with both life 09 and life11 on my book in all accounts and safe mode didn't make any difference.
http://discussions.apple.com/message.jspa?messageID=13342967#13342967
I followed these steps found in the link below but without resolution on my book,
it has helped others
http://mbp-freeze.wikispaces.com/ ( thanks for the link Andyball)
• I see you were on 10.6.6 (this is an old post) have you tried updating to 10.6.7 it has helped some (but not on my mbp)
• you did try resetting the PRAM (steps found in the link for both the pram & Smc reset) & (SMC) didn't work for me either.
• Run Disk permissions didn't help on mine did on others ( am I the only one to have the odd unfulfilled progress bar )
Did you try making a new partition with a fresh reinstall & the apple apps only)
I did but the issue persists and with 3 different cam photos.
Imo this is a graphic card/ logic board problem.
My HD was replaced 3 days ago, and the issue persits in both accounts
Apple has it now, I'll keep you posted on a possible resolution for my mbp, could differ on yours, meanwhile I hope you keep us posted, okay?
Mia
p.s here is one of my crashes, as you can see pretty similar.
Interval Since Last Panic Report: 43190 sec
Panics Since Last Report: 1
Anonymous UUID: 3267FE8C-62AC-45A5-96E2-5C60132287C8
Tue Mar 15 10:50:25 2011
panic(cpu 1 caller 0x9cdbfa): NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xc0000000 0x7f295000 0x0a5480a2, D0, P3/4
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x54f62118 : 0x21b50c (0x5d4438 0x54f6214c 0x223974 0x0)
0x54f62168 : 0x9cdbfa (0xbe32bc 0xc53940 0xbf2424 0x0)
0x54f62208 : 0xae8640 (0x9926004 0x84c4004 0x100 0x462838e4)
0x54f62258 : 0xadf639 (0x84c4004 0x100 0x54f62288 0x9bd6d7)
0x54f62288 : 0x16b09ce (0x84c4004 0x100 0x438004ee 0x951dd1c0)
0x54f623c8 : 0xb072bd (0x84c4004 0x9439004 0x0 0x0)
0x54f62408 : 0x9d6e63 (0x84c4004 0x9439004 0x0 0x0)
0x54f624a8 : 0x9d346f (0x0 0x9 0x0 0x0)
0x54f62658 : 0x9d41bb (0x0 0x600d600d 0x7058 0x54f62688)
0x54f62728 : 0xc7e6e1 (0xc1d00041 0xbeef0003 0xbeef0202 0xbd53600)
0x54f62778 : 0xc7e84e (0x46267000 0xbd53600 0x22b9b000 0x0)
0x54f627a8 : 0xc56484 (0x46267000 0xbd53600 0x22b9b000 0x0)
0x54f627c8 : 0xc7779e (0x46267000 0xc4ef000 0x2 0x471cb4)
0x54f62808 : 0xc775bb (0x46267000 0xc4ef000 0x54f62918 0xca3082)
0x54f62838 : 0xc77893 (0x46267000 0x13da74c0 0xc4ef000 0x0)
0x54f62858 : 0xc9a372 (0x13da74c0 0xc4ef000 0x0 0x0)
0x54f62888 : 0xc98945 (0x4646d000 0x4646d77c 0x1 0x0)
0x54f628a8 : 0xc605a1 (0x4646d000 0x4646d77c 0x0 0x0)
0x54f628d8 : 0xc9a408 (0x4646d000 0x54f62a1c 0x54f62908 0x4646d000)
0x54f62918 : 0xc648de (0x4646d000 0x54f62a1c 0x54f62a1c 0x54f62980)
0x54f62a58 : 0xc9dcfe (0x4646d000 0x0 0x54f62b6c 0x54f62b68)
0x54f62b08 : 0xc60c93 (0x4646d000 0x0 0x54f62b6c 0x54f62b68)
0x54f62b88 : 0x565a88 (0x4646d000 0x0 0x54f62ddc 0x54f62c14)
0x54f62bd8 : 0x566327 (0xceee20 0x4646d000 0xd860288 0x1)
0x54f62c28 : 0x566bdb (0x4646d000 0x10 0x54f62c70 0x0)
0x54f62d48 : 0x285bce (0x4646d000 0x10 0xd860288 0x1)
0x54f63df8 : 0x21d8ba (0xd860260 0xccc75a0 0x1f4580 0xdf1f)
0x54f63e38 : 0x210a3a (0xd860200 0x0 0xcdb4dc0 0x1162ca80)
0x54f63e98 : 0x216c9d (0xd860200 0x0 0x0 0x0)
0x54f63f18 : 0x294e13 (0x54f63f44 0x0 0x0 0x0)
0x54f63fc8 : 0x2a1018 (0x9c16840 0x0 0x10 0x9c16840)
Kernel Extensions in backtrace (with dependencies):
com.apple.nvidia.nv50hal(6.2.6)@0x157a000->0x198efff
dependency: com.apple.NVDAResman(6.2.6)@0x967000
com.apple.GeForce(6.2.6)@0xc55000->0xd0afff
dependency: com.apple.NVDAResman(6.2.6)@0x967000
dependency: com.apple.iokit.IONDRVSupport(2.2)@0x95a000
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x927000
dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x938000
com.apple.NVDAResman(6.2.6)@0x967000->0xc54fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x927000
dependency: com.apple.iokit.IONDRVSupport(2.2)@0x95a000
dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x938000
BSD process name corresponding to current thread: iPhoto
Mac OS version:
10J567
Kernel version:
Darwin Kernel Version 10.6.0: Wed Nov 10 18:13:17 PST 2010; root:xnu-1504.9.26~3/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)

Random black screen using R4870-T2D1G-OC

Hello,
First post here and I hope to provide as much info as I can as I did a search and couldn't find an answer for my issue, sorry for the long read.
I am using the 4870 1GB OC card and have random black screen that forces me to do a hard reset on my pc to recover when using 3d games, or if the pc enters standby or hibernation enabled (have that cut off now). The problem has happened in every game in my collection, 3d mark vantage (paid version), Bioshock, the witcher, Call of Duty 4, Flight Sim X, Warhammer Online, World of Warcraft, Crysis, and Crysis Warhead. It happens at random times can be from 2 minutes to 1 hour of playtime or benchmark time.
What I have done to attempt to fix the problem:
-tried another card from the store
-Monitored temps and they are fine idle is around 45c max load recorded during partial benchmark was 68c.
-removed all current drivers and used the ones from ati from 8.6 to every driver up to 8.10 with the hotfix, went back to MSI drivers.
-thought the problem may have been vista 64, so I did a fresh install of windows xp home 32bit same problem.
-reseated the card double checked connections.
-used an enermax psu but replaced it back with my PC power cooling.
-removed 2gb of memory from my system.
-removed my x-fi sound card, and tried onboard instead
-removed my raid 0 setup and used a single 500gb drive
-Tried the setup on a media series DP35 Intel board using a q6600 and 2gb of mushkin memory.
-researched the issue online more so then ever, found many posts of the problem but no solution
-gave up hope, put my system back to how it was and reinstalled crummy ol' 8800gt and have no issues.
Please help out with any advice or suggestions that may work, I'm just sick of reinstalling windows and importing my data back, and I have replaced everything troubleshooting myself except for the monitor, I only have this one.
My system is:
-GA-P35-DQ6
-Core2Quad QX6850
-4x1GB KingstonHyperX 1066 DDR2
-Sound Blaster X-Fi xtreme gamer
-PC Power Cooling 750w
-2x seagate 500gb 32mb 7200.11 drives
-Vista 64 Home-Premium SP1
-ViewEra 20.1" monitor at 1680x1050 resolution
Thank You
-edit: I also am using the latest drivers for all components and am sticking with the MSI drivers now, the event viewer has never shown any error log except that it had an unexpected shutdown (from me having to reset the pc)

Yes, they are two different pcs, only parts that are the same of those two pc's is the case (antec 900) and the monitor (ViewEra 20.1" at 1680x1050)
PC #1
MB: GA-P35-DQ6 (F9b bios, although I have tried stable ones up till I got the Beta bios.
CPU: INTEL QX6850
RAM: KingstonHyperX 1066 4x1GB DDR2 2.2v (manufacture's spec for that memory)
PSU: PC Power Cooling 750w PPCS750QBL
Sound Card: X-fi XtremeGamer
Hard Drive: Seagate 7200.11 500gb drive
Operating System: Windows Vista 64bit Home-Premium SP1
PC #2
MB: Asus P5B-E (I had originally said that it was an Intel DP35, after double checking it was an Asus board)
CPU: Intel Core2Quad Q6600
RAM: Mushkin DDR2 1.8v 800mhz
PSU: Enermax 620w
Sound Card: On board
Hard Drive: Seagate 7200.11 500gb drive (same model as PC #1 but it is a different drive)
Operating System: Windows XP Home SP2 (also tried SP3)
Both machines honestly have ran memtest86 for many loops, I have ran SeaTools on the hard drives, and prime95 with a program ATI Tool running as well stressing the video. With HardwareMonitor enabled temps are fine, pc runs good still can browse the internet, run it overnight without any crashes.
Usually the moment the Futuremark Vantage gets to GPU test #2 the monitor goes blank, pc is still running in the background. Within an hour of playing any DX10 or DX9.0c video game the same problem happens. Both of these pc's will function fine unless 3d apps are running, or if the pc is put into standby it will not recover.
Both of these two pc's using an Nvidia 8800GT 512mb OC card the pc's function fine, play games fine, go into standby fine.
What I am wondering is what is the next step, RMA the card again? The problem has happened on PC #1 with both cards, only did this troubleshooting when the second card had same problem as first one. Could there be any possibility that it is the monitor? (I have only been able to test what I have on hand to test with, don't have a second LCD but can get one if needed). Or could it be something software? I have tried virtually every combination of driver with or without the ATI Console, and used MSI's Aug 08 release of their driver, and I have never seen any errors in event viewer either.
Hope that helps clear it up some.

Why mu brand new macbook air always black screen while i use it with battery?

why mu brand new macbook air always black screen while i use it with battery?

Press F2 key couple of times.
Reset PRAM. http://support.apple.com/kb/PH4405
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Is the battery charged?
You can return a new Mac within 14 days of purchase.
A new Mac is in warranty for 1 year from the date of purchase.
A new Mac comes with 90 days of free tech support from AppleCare.
AppleCare: 1-800-275-2273
Call AppleCare.
Best.
Best.

20" imac gets random black screen and wont wake up.

O.K. this imac randomly goes to a black screen while your using it. It looks like it's asleep accept the light in the front doesn't pulse and it wont wake up.
If I hit the power button to put it to sleep I can then wake it up.
I tried resetting the SMU but have had no luck (not sure if it's even resetting seeing the date and time are still good) not sure why seeing resetting the SMU is a very simple processes.
It's a 20" intel imac 2GHz duo with system 10.4.11 (early 2006)
I was going to reinstall 10.4.11 to see if that helps and wanted to see if anyone else knows what to do. Its very random and seems to be getting worse, sometimes as soon as I get it fixed it goes black again. It usually only takes 15-30min after start up and doesn't matter if your using it or not.

Hi all,
my first mac ever was also an Early 2006 20" iMac and it had the same symptons as yours late last year.
Tried all I could think of and then took it to an Apple Dealer here in Hamburg.
Turned it was the Power Supply Unit (both of them) and a repair (out of Applecare obviously) would have been in the range of about 500 Euros (material plus manhours).
So I decided to not get it repaired.
Regards
Stefan

Apple IMac 27 has a problem. Random black screen. Over 1 year without any fix

Apple IMac 27 has a problem.
Random black screen.
Over 1 year without any successful fix.
IMac 27 10.8.4 (12E55) - bought in 2010
3.06 GHz Intel Core 2 Duo
4GB 1067 Mhz RAM
Graphics ATI Radeon HD 4670 256 MB
The IMac computer screen goes black randomly but the machine still running beyond.
In order to go back to normal i need to awake the computer by hitting with the pointer a hot corner previously created " sleep mode" ( top left ).
..the black screen would come back after one second again..and then again and then again and then again..with different intervals..sometime 2 seconds after the other, sometime as soon as appears the user login screen.
I took the machine to an Apple Store two times over one year, they opened, cleaned it but they didn't replace anything has they could not understand what they real problem was. I was happy for that because they didn't try to make me spend money on something which was not going to solve my issue for sure.
Last time i kindly asked them to inspect everything meticulously, part by part, i left the machine with them for over 2 months. They couldn't understand why this was happening..after couple of weeks, 5 more machines came in with the same problem.
On some of them., upon request of the client they changed the graphic card but apparently this was not the fix, the problem come back again. Apparently changing the graphic card or the screen or else it didn't solve any problem to anyone. I'm almost thinking to "trough it out of the window"..we all spend money for this machines and i think we need to know if Apple is looking in to this or not.
Lately i tried to do an SMS RESET and PRAM RESET, it feels it got better a little but problem still coming back.
Also, all usb devices are disconnected and the problem still there
Below you will see a copy of the console report. I honestly don't understand much of it as i'm not a computer guy.
27/07/2013 11:03:39.837 WindowServer[119]: Created shield window 0xb3 for display 0x04272d40
27/07/2013 11:03:39.837 WindowServer[119]: device_generate_desktop_screenshot: authw 0x7fad92c79dc0(2000), shield 0x7fad92c34370(2001)
27/07/2013 11:03:39.906 WindowServer[119]: device_generate_lock_screen_screenshot: authw 0x7fad92c79dc0(2000), shield 0x7fad92c34370(2001)
27/07/2013 11:03:41.701 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: releasing authw 0x7fad92c79dc0(2000), shield 0x7fad92c34370(2001), lock state 3
27/07/2013 11:03:41.702 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: err 0x0
27/07/2013 11:03:41.704 WindowServer[119]: Created shield window 0xb4 for display 0x003f003d
27/07/2013 11:03:41.704 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: releasing authw 0x7fad92c79dc0(2002), shield 0x7fad92c34370(2001), lock state 3
27/07/2013 11:03:41.704 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: err 0x0
27/07/2013 11:03:45.186 com.apple.launchd.peruser.502[163]: (com.akamai.client.plist[740]) Bug: 12E55: launchd + 95444 [7DCC9489-2DF5-3807-83FA-EF5666EE8078]: 0xd
27/07/2013 11:03:45.208 com.apple.launchd.peruser.502[163]: (com.akamai.client.plist) Throttling respawn: Will start in 10 seconds
27/07/2013 11:03:52.117 WindowServer[119]: CGXSetWindowBackgroundBlurRadius: Invalid window 0xffffffff
27/07/2013 11:03:52.118 loginwindow[43]: find_shared_window: WID -1
27/07/2013 11:03:52.118 loginwindow[43]: CGSGetWindowTags: Invalid window 0xffffffff
27/07/2013 11:03:52.118 loginwindow[43]: find_shared_window: WID -1
27/07/2013 11:03:52.118 loginwindow[43]: CGSSetWindowTags: Invalid window 0xffffffff
27/07/2013 11:03:53.763 WindowServer[119]: Created shield window 0xba for display 0x04272d40
27/07/2013 11:03:53.763 WindowServer[119]: device_generate_desktop_screenshot: authw 0x7fad92c87490(2000), shield 0x7fad92e6eef0(2001)
27/07/2013 11:03:53.838 WindowServer[119]: device_generate_lock_screen_screenshot: authw 0x7fad92c87490(2000), shield 0x7fad92e6eef0(2001)
27/07/2013 11:03:53.880 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: releasing authw 0x7fad92c87490(2000), shield 0x7fad92e6eef0(2001), lock state 3
27/07/2013 11:03:53.880 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: err 0x0
27/07/2013 11:03:53.883 WindowServer[119]: Created shield window 0xbb for display 0x003f003d
27/07/2013 11:03:53.883 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: releasing authw 0x7fad92c87490(2002), shield 0x7fad92e6eef0(2001), lock state 3
27/07/2013 11:03:53.883 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: err 0x0
27/07/2013 11:03:55.209 com.apple.launchd.peruser.502[163]: (com.akamai.client.plist[742]) Bug: 12E55: launchd + 95444 [7DCC9489-2DF5-3807-83FA-EF5666EE8078]: 0xd
27/07/2013 11:03:55.252 com.apple.launchd.peruser.502[163]: (com.akamai.client.plist) Throttling respawn: Will start in 10 seconds
27/07/2013 11:04:04.482 WindowServer[119]: CGXSetWindowBackgroundBlurRadius: Invalid window 0xffffffff
27/07/2013 11:04:04.482 loginwindow[43]: find_shared_window: WID -1
27/07/2013 11:04:04.483 loginwindow[43]: CGSGetWindowTags: Invalid window 0xffffffff
27/07/2013 11:04:04.483 loginwindow[43]: find_shared_window: WID -1
27/07/2013 11:04:04.483 loginwindow[43]: CGSSetWindowTags: Invalid window 0xffffffff
27/07/2013 11:04:04.704 WindowServer[119]: Created shield window 0xbf for display 0x04272d40
27/07/2013 11:04:04.726 WindowServer[119]: device_generate_desktop_screenshot: authw 0x7fad92ebdb20(2000), shield 0x7fad92e6eef0(2001)
27/07/2013 11:04:04.795 WindowServer[119]: device_generate_lock_screen_screenshot: authw 0x7fad92ebdb20(2000), shield 0x7fad92e6eef0(2001)
27/07/2013 11:04:05.245 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: releasing authw 0x7fad92ebdb20(2000), shield 0x7fad92e6eef0(2001), lock state 3
27/07/2013 11:04:05.246 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: err 0x0
27/07/2013 11:04:05.253 com.apple.launchd.peruser.502[163]: (com.akamai.client.plist[744]) Bug: 12E55: launchd + 95444 [7DCC9489-2DF5-3807-83FA-EF5666EE8078]: 0xd
27/07/2013 11:04:05.249 WindowServer[119]: Created shield window 0xc0 for display 0x003f003d
27/07/2013 11:04:05.249 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: releasing authw 0x7fad92ebdb20(2002), shield 0x7fad92e6eef0(2001), lock state 3
27/07/2013 11:04:05.249 WindowServer[119]: handle_will_sleep_auth_and_shield_windows: err 0x0
I'm now thinking to try to take the machine to its original firmware and see if it still does it, does anyone have any sugestion?
I use a lot photoshop and other image software, this computer is essential for my work. For more then one year this issue caused me problems.
Luckly i have a Macbook Pro too and i managed to do some of my work there. At last I was thinking to buy an external screen and attach it to the Macbook pro in order to work on my big images. But who wants to spend money again!!!???? This is not a fixture, this is silly. I wish to have my IMAc working again.
The warranty it's obviously over and this problem happened right after the warranty was over...
I write this post because i'm so tired of this issue and online nothing can be found apart from posts from so many people that have the same problem and no fixture has been found.
The only fixture seams to be to buy a new computer... Ole'!!!..new money flowing in in the cashier!! forget it!!! i would rather change company if apple doesn't respond to this.
For over 10 years i have been a Apple owner..
When this problem appears it's like someone it's playing a joke at you...
Comments welcome..
Thanks

Hi, I've seem to have found out the source of the problem.
The issue is related to heat, and an iMac 27" gets hot pretty fast.
If I boot the iMac straight after first start into Windows 7 I seem to get a lit built-in display at all times. I can also boot OS X first and then into Windows 7 and the built-in screen get lit every time as long as the iMac isn't hot.
Strange thing is that the monitor connected to the display port gets lit every time. So I can only assume that the heat only interfere with output to the built-in LED screen.
So this iMac is going to an Apple premium reseller for service, and I'll tell you guys how it went.

IMac 27 Late 2009 with Random black screen at startup of Windows 7!

Hi, I'll try to explain the my random black screen issue as best I can.
I have a boot camp partition with Windows 7 x64 Ultimate installed.
I used the USB method to install, all goes well and Windows 7 gets installed, I update drivers, install boot camp etc. all is good, right!
My problem is that everything seems to be in working order, but the built in LED screen will only get lit/active in 1 out of 5 times at startup of Windows, eg. the built in screen stays black/off (black screen issue), like the install issue on iMac 27 I7 w/ATI 4850.
NOTE! When booting OS X the built in LED screen gets lit/active on every startup.
So what I did was connect a second LCD monitor via Display port to DVI, this monitor/screen has no issues, it gets lit/active on every startup of Windows, even if the built in screen/monitor stays black/off (black screen issue).
NOTE! I have tested both the latest drivers from Apple (10.4 19/MAR/2010, found on the USB install method) and AMD ATI Catalyst Driver (10.8 25/AUG/2010). The issue remains on both Apple released drivers and AMD ATI released drives.
1. So to me it seems like there are some detection/communication issues between the built in monitor and the video card on Windows 7, as there is no issue detecting and activating a monitor connected to the display port.
Are we missing a monitor driver in Windows that OS X has, or is this a hardware issue that Apple knows about and compensates for in OS X with on load firmware, driver or a kernel fix?
2. Does anyone else have this issue on their 27" iMac Late 2009 I7, ATI HD 4850 machine?
If yes, did you manage to solve it?
Thanks for any help on this issue.
Cheers,
Kevin

Hi, I've seem to have found out the source of the problem.
The issue is related to heat, and an iMac 27" gets hot pretty fast.
If I boot the iMac straight after first start into Windows 7 I seem to get a lit built-in display at all times. I can also boot OS X first and then into Windows 7 and the built-in screen get lit every time as long as the iMac isn't hot.
Strange thing is that the monitor connected to the display port gets lit every time. So I can only assume that the heat only interfere with output to the built-in LED screen.
So this iMac is going to an Apple premium reseller for service, and I'll tell you guys how it went.

Black screen while working

last few days my mac got a black screen while working once ort twice a day. no idea why. it's only the screen and there is no way to wake him up. but the cpu didn't shut down and it sounds like he is working correctly. any idea? would make me happy!

Hey enderci,
Thanks for using Apple Support Communities.
If you are not getting video, this articl has as section for no video that should help.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573#1
Have a nice day,
Mario

R7870 TF III 2GB OC edition Black Screen while gaming (Guild Wars 2)

Hello there mate,
1st time post for me,
i'm from Indonesia, and i just got my r7870 recently
and i'm using it now for playing Guild Wars 2.
1st i'm using the "auto detect" mode in Guild Wars 2
where give me "high" setting for the graphic
but after a few minutes i got a black screen.....
that force me to shut down my system by press and hold the power button,
then i try with "low" setting for the graphic (in Guild Wars2)
but still got the black screen after another few minute..
and i'm using CCC ver. 12.8
i have been search and found some post with similar issue with this (black screen while gaming with r7870)
what can i do to solve this prob ?
Note : before using r7870, i used r4870 1GB, and have no problem playing Guild Wars 2 (in low setting)
here is my rig :
Main Board : MSI - Z68MA - G45
CPU : I3 - 2120
RAM : 2x4GB GSkill
PSU : 650 Watt Seasonic
HHD : 2x 500gb Seagate
Graph Card : MSI - r7870 TF3 OC edition
sorry for my bad English, hope you all still can understand.

Quote from: Svet on 08-September-12, 07:20:56
have you tried msi vga drivers for your card?
do you have such issues elsewhere?
well i haven't tried using the drive that come within the bundle yet
but as i mentioned before, i did not have any problem playing GW2 and other games
with my previous card (4870) and using exactly the same rig,
so i don't think the problem lies elsewhere,
but i think ill try msi vga driver that i got in the cd 1st,
thanks for your suggestion, ill report again the result later.
tried the msi vga drive (ver. 8.95) that come within the budle
and well... still got the black screen problem.. (tested with guild wars 2)

The video app on my iPad now only shows a black screen. Used to work fine then crashed in the middle of a short video.

The video app on my iPad now only shows a black screen. Used to work fine then crashed in the middle of a short video. When I open the app the screen is just blank. As it is a default app I can't delete and reinstall. Anybody else experience this?

Try searching for the name of one of your videos on the iPad's spotlight search screen - swipe your first homescreen to the right, type in it's name, and if it finds it tap on it to see if it plays.
If that doesn't work then try closing the Videos app via the taskbar : from the home screen (i.e. not with the Videos app 'open' on-screen) double-click the home button to bring up the taskbar, then press and hold any of the apps on the taskbar for a couple of seconds or so until they start shaking, then press the '-' in the top left of the Videos app to close it, and touch any part of the screen above the taskbar so as to stop the shaking and close the taskbar.
A third option if the two above don't work is a reset : press and hold both the sleep and home buttons for about 10 to 15 seconds (ignore the red slider), after which the Apple logo should appear - you won't lose any content, it's the iPad equivalent of a reboot.

How do I find out what is causing a random black screen on iMac?

Hello I get random black screen on a iMac and I haven't made any hardware changes. How can I find out what is causing this?
Thanks
Jer
iMac 2.66 core 2 duo with Snow Leopard 10.6.8

You can do an SMC and PRAM reset. These won't hurt anything and 'might,' maybe help the screen issue. If it doesn't, then take it into an Apple store or AASP for their guidance and advance testing diagnostics.
SMC:
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
PRAM:
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

Random black screen while using

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