How to fix black screen on boot up
When i start my iMac the computer screen stays black.. You can hear Apple chime boot up but the screen stays black... I already tried to reset a couple things but still the same.... What could be the problem?
Try these things:
> Resetting the System Management Controller (SMC)
> Resetting the NVRAM and PRAM
> Starting up in Safe Mode
Then if it is still a no go:
> Apple - Support - iMac - Service FAQ
Similar Messages
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How ti fix black screen on i phone 3gs?
how to fix black screen on i phone 3gs
I suspected that. Well, sorry the forum forbids helping you in any way. You have to google for help.
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HT4061 how to fix black screen. Phone still rings.
how to fix black screen. Phone still rings.
Hello TaQuilla,
If nothing ever shows on the screen when you start it, or anything you may need to reset the phone, or restore the software. Try this first:
Resetting your device
Press and hold the Sleep/Wake button and the Home button together for at least ten seconds, until the Apple logo appears.
If that does not get the screen going, then backup your device, and restore it.
iOS: How to back up
http://support.apple.com/kb/ht1766
iTunes: Restoring iOS software
http://support.apple.com/kb/ht1414
All the best,
Sterling -
Fixed black screen on boot, passwords not working now
After fixing black screen on boot with the advice provided by the great community. (Here: https://bbs.archlinux.org/viewtopic.php … 9#p1501989 )
I followed the method outlined in the post I reference. Booting from live USB, mounting my root home and usr partitions, arch-chrooting into the root partition and then setting modeset=0 in radeon.conf and putting radeon in MODULES in mkinitcpio.conf then running mkinitcpio -p linux. Afterwards I exited the chroot and unmounted all partitions.
This fixed the blank screen, but all of my passwords are changed. The root and my user account passwords don't work. So again I booted into hot usb, mounted partitions, arch-chrooted in, and ran passwd to change root pw and then su to get to my user account to run sudo passwd. After doing so, I exit the chroot and try to unmount the partitions. I can unmount /dev/sda2 (home) but no sda1 (root) or sda3 (usr). It says: cannot umount /mnt/arch target is busy or cannot umount /mnt/arch/usr target is busy. It suggest lsof(8) or fuser(1) but either I use them wrong or they don't help. If I just reboot at this point my passwords still don't work. Why can I not unmount usr or root partitions? It says they're busy but ps -ax shows nothing. Any ideas? If more info is needed I will promptly supply it, I want to get my arch box up and running again asap
Take care fellow archersForgot to mention when I boot into Arch normally, it does systemd-fsck on all the partitions they all pass but after checking /dev/sda2 (home) it freezes. The messages displayed are:
running hook [udev]
Triggering uevents
performing fsck on /dev/sda1 /dev/sda1 clean xxxx/xxxx files, xxxx/xxxx blocks
mounting /dev/sda1 on real root
running late hook [usr]
mounting /dev/sda3 on /usr
running cleanup hook [shutdown]
running cleanup hook [udev]
Welcome to Arch Linux!
kvm: disabled by bios
systemd-fsck[252]: /dev/sda2 clean, xxxx/xxxx files, xxxx/xxxx blocks
and it freezes here if I switch TTY's none of my passwords work.
Thanks in advance
Last edited by cshenkan (2015-03-03 04:37:00) -
HT4061 how to fix black screen on iphone 5
how to fix black screen on iphone 5 , can someone answer me , please !?
To solve most of iPhone os problems you can perform a soft reset which will not change anything inside the phone
It'll simply remove the errors
To do that
1.Hold power button for 5 seconds
2.without releasing power button press home button and keep both pressed till the apple logo comes up
3.Now release both buttons
Your phone has now been reset -
How to fix black screen on your iPod touch?
My ipod touch, wont show anything. it just a black screen. I held the home button, and it tells me that i need to connect to the internet, but still have a black screen.
the day before i notice my ipod went to a blue screen and then shut off.
i tried reseting it on my intune, but it didnt do anything.If you restored to factory settings/new iPod via iTunes (Not via Settings>General>Reset>Erase all Content and Setting) and still have the problem that indicates a hardware problem.
Make an appointment at the Genius Bar of an Apple store..
Apple Retail Store - Genius Bar
Apple will exchange your iPod for a refurbished one for this price. They do not fix yours.
Apple - iPod Repair price
A third-party place like the following maybe less. Google for more.
iPhone Repair, Service & Parts: iPod Touch, iPad, MacBook Pro Screens -
How to fix black screen on iPad after restoring from 4.2.1 to 4.3.3
recently i just restore my ipad from 4.2.1 to 4.3.3, suddenly it's just hang up on black screen (DFU mode i guess).
I've tried pressing home and off button for 10 sec and bla..bla....but doesn't work at all...
Googling to find another way such as use TU and others third party software..but still not bloody working at all...
After few troubleshoot done, thing goes worse and worse...
now my iTunes didn't detect my iPad at all.
Can anyone help me?PLEASEEEEE!!!!!!Try reset iPad
Hold down the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears
Note: Data will not be affected. -
How to fix black screen hard freeze MBP 2010?
My 2010 MBP has a lock up issue, at random times the screen goes to black, if there was sound playing it gets stuck in a loop and the keyboard lights stay on. Nothing works, and the only way out is to do a hard boot by pressing the power button. This is random, at anytime doing anything, I could just have one safari window open or one firefox window open. The only way that I can recreate the problem is by using iDVD, it will crash as soon as I have a movie ready and press the burn button. Anyone have any ideas? I have already tried resetting the SMC and nothing. The problem will always comes back. Please someone help, I am falling behind at school because of this! Thanks!
Welcome to the crowd. This problem is so wide spread, I am surprised that Apple can not fix this problem,
or if they are please inform you tech support at your Apple stores. They seem to be clueless.
I have worked with Apple computers since 1985 and have never seen anything this bad.
So I do not have any ideas of how you can fix this. I am like you, I can't afford to take my computer in and leave it for several days. So as you say, we live with it the best we can. I have come to a point that I am saving
my files every few minutes. Really effects the creative part of what we do as a New Media development company. I hope someone out there has cracked this problem. I am going to call my Apple Care support today,
and put the challenge out to them. The key is to document this problem if you do have a warranty that is still in force and Apple Care. Its hard to imagine that I have an old Macbook Pro that is more dependle than this 1 year old Macbook Pro. I hope more people get on this issue and voice their concerns and solutions.
Take care, -
Win 7/Z580: Black screen on boot up, before login screen?
Win 7/Z580: Black screen on boot up, before login screen?
=======================================
I find some interesting posting in this forum. Thanks for keeping this forum to help windows/Lenovo community. I like to pick up the brain of this forum to resolve the black screen issue. I am not sure, whether it caused by virus. I use Microsoft Security Essentials. I am not able to run this in command prompt.
I started my laptop this morning & login screen showed up. Once I entered my login credentials, I heard the sound that usually plays once a login is successful, but I ended up with a black screen. After this occurred, I had to hold down the power button to manually shut down the computer. Once I started it up again, I was prompted to do a system repair, which eventually ended up with all successful outcomes, but I now have a black screen with a cursor before the login screen now. I have no idea what caused this to happen. My laptop is a Lenovo Ideapad Model Z580 (500 GB HD, 6GB RAM).
I am not able to get into safe mode or any other mode, which all leads to a black screen described above. I am able to use the "Repair Your computer" tools after pressing F8 during booting only . All other options leads to Black screen with cursor in the middle
Last Known Good Configuration leads to same
Enable Low Resolution Video (640x480) leads to same My Z580 is not responding to CTRL+ALT+DEL Windows Logo keys as well.
**** I tried SAFE Mode. It loaded couple of drivers and paused at CLASSPNP.SYS load. It went to Black screen with cursor at center.
I am able to invoke control pannel from Command prompt of working PC by typing control.
Z580 PC is not responding to control from command prompt (under Repair Your computer) either.
Z580 is able to use the "Repair Your computer" tools after pressing F8 during booting .
Under local user login it provided Start Repair option. As I pick this option, I got the following. Problem signature
Startup repair offline
1 - 6.1.7600.16385
2 -
6.1.7600.16385
3 - unknown
4 - 21200332
5 - autofailover
6 -
4
7 - NoRootCause
os v - 6.1.7600.2.1.0.2561
locale id – 1033
Under Admin user login, it provided system recovery options. It is not picking up the recovery point created a while ago.
Windows Memory Diagnostics is not launching and shows a black screen without cursor.
I am able to get into command prompt. I tried the following there.
I am not able to run cmd as admin
I reviewed the past posting of this forum on this subject.
Windows 7 boots to an unresponsive black screen with mouse cursor...
System File Checker: Run sfc /scannow & analyze its logs in Windows 7 / 8
Windows Resource Protection could not start the repair service
How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program generates in Windows Vista
Force SFC to Run in Windows 7
Windows Resource Protection found corrupt files but was unable to fix some of them
SFC /SCANNOW showed up
"Windows Resource Protection could not start the repair service
I did "net start trustedinstaller"
"Windows Resource Protection detected pending repair restart the computer"
I ran repair options using sfc /scannow /offbootdir=x:\ /offwindir=D:\windows
and got "Windows Resource Protection found corrupt files but was unable to fix some of them "
I did findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >sfcdetails.txt I will be glad to attach the zip file that contain CBS.LOG & [SR] tag extract (xxx.txt).
I did not any find ERRORS there, SFC ended with message saying "found corrupt files but was unable to fix some of them" . It is misleading. There is no [SR] tag pointing to corrupt files. Does SFC through false positive like this?
I ran chkdsk. ResultsFile verification completed.
0 bad file records processed.
0 EA records processed.
CHKDSK is verifying indexes (stage 2 of 5)...
Index verification completed.
0 unindexed files scanned.
0 unindexed files recovered.
Windows has checked the file system and found no problems.
0 KB in bad sectors.
Failed to transfer logged messages to the event log with status 50.
It is puzzling me.
Thanks for helping.I tried these steps 8/7/2015. I ran chkdsk. Results for D:\
File verification completed.
0 bad file records processed.
0 EA records processed.
CHKDSK is verifying indexes (stage 2 of 5)...
Index verification completed.
0 unindexed files scanned.
0 unindexed files recovered.
Windows has checked the file system and found no problems.
0 KB in bad sectors.
Failed to transfer logged messages to the event log with status 50.
Updated on 8/7
============
Here are my HDD config:
Volume ### Ltr Label Fs Type Status Info
Volume 0 F WDO_Media64 UDF DVD- Healthy
Volume 1 C NTFS Partition Healthy
Volume 2 D Windows7_OS NTFS Partition Healthy
Volume 3 E LENOVO NTFS Partition Healthy
Volume 4 G FAT Removable Healthy
Volume 5 LENOVO_PART NTFS Partition Healthy Hidden
I ran CHKDSK /F /X for C, D, E. All resluted to "Windows has checked the file system and found no problems."
F8 ===> Repair Computer===> Command Prompt ===> Works OK
F8 ===> Repair Computer===> Start up Repair ==> Results into "Startup repair could not detect a problem"
F8 ===> Repair Computer===> System Restore ===> "No restore points has been created on yout computer system drive"
F8 ===> Repair Computer===> System Image Recovery ===> "Windows cannot find a system impage on this computer"
F8 ===> Repair Computer===> windows Memory Diagnostiyics ===> "Black screen with Cursor in the middle"
After getting into Command prompt
I run net user
User accounts for \\
Administrator Guest
The command completed with one or more errors
It did not list other users in my laptop. I do not know why? I tried under F8 ===> Repair Computer===> Command Prompt ===> Works OK
Here is the result:
- Boot with Last Known Good Configuration (F8 menu) ===> Black screen with cursor in the middle
- Restore to a prior date (System Restore) - System Restore ====> Already reported in previous reply
- Try a clean startup Troubleshoot Application Conflicts by Performing a Clean Startup results in
Clean Start up
D:\Windows\System32>runas /user:administrator msconfig
Enter the password for administrator:
Attempting to start msconfig as user "MININT-84TH5FG\administrator" ...
RUNAS ERROR: Unable to run - msconfig
1060: The specified service does not exist as an installed service.
- Try loading defaults in BIOS - F2 ==> f9 ==> f10 ===> Black screen with cursor in the middle
Check if explorer.exe is running and start from CTRL+ALT+DEL (task manager - new task) ===> CTRL+ALT+DEL not responding
Is anybody in this forum point me to fix? Thanks for looking into this issue. -
Black screen on boot & Diagnostic errors
Hi,
I've a HP g62 notebook pc that has some problems when is booting.
Sometimes the screen is black when i try to boot or i've a BSOD related with the atikmpag.sys.This PC doesn't have warranty, but i don't know if the problem is only because of the SO or if there is any hardware failure.
The PC model is the: g62-b10sp. Product id XF293EA#AB9
System ID 143A
I tried the HP diagnostics wich I retrieved the some test menssages: Memory Test: PASSED
SMART CHECK : PASSED
Short DST : PASSED
Optimized DST : PASSEDHard disk test: PASSED
Battery Test : Primary - Replace
Failure ID: MBQ3W8-5667NG-9XL03F-C0F403 Start-Up Test : FAILED
Failure ID: MBQ3W8-5667NG-9XL03F-X0F403 Run-In Test: FAILED
FAILURE ID: MBQ3W8-5667NG-9XL03F-C0F403 System Tuneup: FAILED
FAILURE ID: MBQ3W8-5667NG-9XL03F-C0F403
Someone from the HP support team could help me?
I wanna know what those failures id are related... They are failures from motherboard/graphics?
Thank you for you attention
Best regardsHi , Thank you for visiting the HP Forums! A great place where you can find solutions for your issues, with help from the community!
I came across your post about the Notebook, and wanted to assist you! I have looked into your issue about your HP G62-b10SP Notebook and an Black screen on boot showing. Thank you for the error messages and the explanation. Very helpful in diagnosing the issue. The first error Battery Test : Primary - Replace
Failure ID: MBQ3W8-5667NG-9XL03F-C0F403 the Real Time Clock battery needs to be replaced. All the others are the same error message as one can not perform as the Real Time Clock battery needs to be replaced. I recommend to replace the Real Time Clock battery and run the tests again. Here is a link to show you the part number and what you need to do to replace Real Time Clock battery. Page 51 for the part number and shows you how to replace it. I hope this helps, please let me know how it goes. Thanks. -
Black screen at boot MSI Z77A-G43 with HD7850
Hi,
I've tried everything You suggested in this topic. I've upgrade and downgrade bios (official 2.3, 2.4, 2.8, 2,9 / beta 256, 281,296) few times but still is black screen at boot. Now i'm on the newest beta bios 296 and still same issue on Sapphire HD 7850 with my Z77a-G43 board. I know for sure that sapphire working well because I've checked on other mobo with even worst PSU (400W instead 550W Volcano). Before hd 7850 I had gtx460 and swith those few times and always gtx460 works fine, so I don't understand anything right now.
Tried different slots, also clear cmos.
Board: MSI Z77A-G43
Bios: Version 296
VGA: Sapphire HD7850 1GB
PSU: Modecom Volcano 550W
Intel Core i5-3570k
MEM: Kingston 4GB 1600MHz
HDD: 2xSSD
Without OC
OS: Windows 7 64bit Professional
Can You help me somehow, maybe I did not check something else?Quote from: The CPU Whisperer on 22-April-13, 16:06:05
Do you see the same problem on bios 2.90?
The Z77A-G43 seems the have difficulties accepting HD7xxx AMD VGA cards lately.
It seems that the problem is gone. I thought of it being an ATI driver issue ~ but not even the latest didn't fix it. But since I flashed to BIOS 2.9 I haven't encountered the problem anymore. So I believe something is fixed between 2.3 to 2.9.
However my problem was a bit different that the OP has.
Oh, and I said this on other thread so I say it here too: MSI and Asus 7xxx cards haven't faced the kind of issues Sapphires are having. I'm so glad to my choice... as I almost picked Sapphire but then read comments on Newegg which weren't in favor for Sapphire. -
Familiar Story - tx2000 - lights and fan on, but black screen at boot up
I've been reading around that there's a common problem with the 1000 series of tablets. After 1 1/2 years, the sucker gets a black screen at boot up, yet the lights are on.
Well, almost a week to my tx2000's 1 1/2 year date (and now out of warranty), I tried to take my tablet out of hibernation. The screen was black yet the lights were on and I could hear the fan.
I tried basic troubleshooting with the online tech, but to no avail. It doesn't work, and they tell me it'll cost about $400 for it to be picked up and repaired. Anybody got a viable solution, or do I just need to go ahead and start saving for a Mac?
Thanks HP for reselling such faulty merchandise.
http://www.mycheaplaptop.net/2009/03/never-buy-hp-laptop/So this most likely does not apply to the tx1000 problem, but I believe the tx2000 recent problem is not related.
For those getting lights and fan on.. or perhaps on for a second or so but no boot screen or logo it maybe related to your video card driver.
Sounds crazy right? Well your video card driver controls how your computer goes into hibernation and sleep. If the drivers are incorrect the system may not handle this process correctly when you try to reboot it.
I'm not certain on how to get the system to boot up again, but I've done it quite a few times while trying to revive the machine.. pulled the battery.. the ram.. held the power button.. lots of cussing.. the solution seemed different each time, but eventually if you can get back into windows you'll find that either by not using hibernation/sleep or by loading the original video card drivers from the hp site, you'll avoid this problem again.
This problem started occurring for me after microsoft made available a driver update on windows update this past summer.. then suddenly everyone started having issues at the exact same time.. I've seen it blamed on simultaneous heat issues around the world caused by exactly 1 year and 2 months of dust collection on every tx2000 laptop... however I'm quite certain it's the new video drivers in combination with hibernation/sleep.
But don't take my word for it. For more information on how video drivers can affect the boot process check this site: http://articles.techrepublic.com.com/5100-10878_11-1046825.html -
My T420s (2 months old) recently has been giving me a black screen after boot up (no "Thinkpad" image is displayed during boot up). System totally unresponsive -- I have to push on/off button multiple times. Subsequent boot up usually OK. Sometimes once I'm up and running, upon entering sleep mode, the machine will not wake up.
I have adjusted power management setting and and up-to-date on all drives. HELP!!!if this is constantly occurring this would mean something is wrong with the Thinkpad's hardware, since this laptop is fairly new, you should consider getting it fixed under warranty.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft -
Black screen on boot /w four red LEDs on D-Bracket
Whenever I go switch the power off on my PSU and turn it back on, and after pressing the power button on the front of the computer it doesn't post it acts as if I kept pressing the reset button.
The D-braket shows 4 red leds (which means damaged/not installed processor).
But if I hold the power button to turn if off, then I turn it back on it works flawlessly!
Am I doing something wrong? I didn't have this problem before.
Specs are below....
BioHazI did a Google search and found this below...
This happens to be my exact same problem, it happens when you turn on the PSU switch then turn on the computer immediately after that. It seems like you just have to wait.
Is this a common problem?
Should I worry about this?
Quote
The old black screen on boot up with four red LEDs on the D-Bracket
is a fairly common problem.
So far I've only seen four fixes for the problem.
1. Defective motherboard (Although this is seldom the problem)
2. Power supply is defective, or you forgot to connect the four
wire auxiliary power connecter to the motherboard. The auxiliary power
connecter must be connected for this motherboard to work.
3. Your reset switch is stuck. Disconnect the reset switch from the
motherboard, then try to boot up.
4. This one is weird. It fixed my problem, however, based on the
troubleshooting you've done, I don't hold out hope it will fix yours.
For some strange reason, some MSI motherboards will not boot
if you've just plugged them in. Plug in the computer, make sure
the power strip and the switch on the power supply are all in the
"ON" position, then go grab a beer. After waiting a couple of minutes,
turn on the computer.
I know it sounds weird. But I have the same motherboard and CPU.
If I turn on the power strip and attempt to boot my computer immediately,
I get a black screen and four red LEDs. If I turn on the power strip and
wait a minute or two, the computer boots up every time and works
perfectly.
Hope this helps.
"Bratek" wrote in message
news:[email protected]...
Self-build K8T Neo/Athlon 64 - All went well and installed without
issue. Proceed to start for first time, POST Message of "Device not
installed, Bios not found" Not verbatim but basically that. Could not
get past that except to enter CMOS Setup, RAID setup etc. Attempted
Win-ME Start-up disk and got to a command prompt and attempted to
install Xp Pro, started but gave error of hard drive not found though
all SATA connections were solid. Decided must be related to the BIOS
not found issue. Downloaded latest BIOS for AMI for this board and
from command prompt typed A:\adsfI712.exe a6702vms.160 The screen
showed the Flash and then the Programming without a problem.
Restarted PC and Monitor was BLACK. Checked all conn's, replaced Video
card etc.
Next step, Copied Flash Util: adsfI712.exe and renamed BIOS of
amiboot.rom and restarted PC holding Ctrl-Home for at least 5 mins. No
success. Attempted Clear CMOS Jumper, replaced and Restarted with
Floppy Amiboot.rom again. No Success. noted D-Bracket with 4 Red LED's
on back. I know what that means but do not know if that was there all
along. Removed CPU Heatsink and verified power, connections and
reseated CPU and replaced Heatsink w/ no problems noted. Repeated Boot
steps with amiboot.rom but still black screen throughout. Please Help!
Thanks in advance.
AMD Athlon 64 3000+
MSI K8T NEO FIS2R
AMI Bios (attempted 1.4 and 1.6)
Legacy DDR 512MB PC3200 400mHz Single
Nvidia GeForce FX5200 (temporary)
Maxtor 160GB SATA 7200 8MB
Emprex DVD Dual 8x DVDRW
Raidmax PSU 420W
Windows XP Pro Eventually -
970 GAMING black screen when boot on cold start, have to clear CMOS everytime
I have 970 GAMING w/ FX8320, it shows black screen when boot on cold start, have to clear CMOS everytime to enter default.
I have updated it to the up to date M11 bios. Once it boot up, it functions OK no matter whether you reboot or reset it. But after turned off a few hours (cooled down), it shows on black screen again on boot, all LED lights up OK, but I can hear the fan like keep rebooting, any idea?
PSU seasonic 430W, GPU HD7750.In what DIMM slots did you insert your memory? I just got and at this moment building a new computer with a 970.
A horrible experience I had with my last build reminded me of it. My board was am MSI A88XM-E45. DIMM1 is blue, DIMM2 is black, DIMM3 is blue, & DIMM4 is black. When using two sticks of RAM, it says to install one on DIMM1 & the other in DIMM3 (Makes sense... After all, it's color colored that way).
Well it would not boot. I reseated every component and for HOURS tried almost everything. Finally I decided to place my two sticks of RAM in the first two DIMMS and viola!
I think I will begin this build the same way.
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