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Computer won't load to login screen


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#1 Zenati

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Posted 27 December 2017 - 02:51 PM

Hello,

As the topic states, my computer will no longer load to the login screen. It is a 4½ year old desktop with Windows 10, an i7-4770K @ 3.50GHz processor, GeForce GTX 780 graphics card, 16GB RAM, and an SSD. Firstly, however, I would like to mention how the computer has worked before this problem:

 

It has never had any problems (apart from one point when I had to remove some dust from its interior, which is not the case here), and it has always been running smoothly in every way. However, a few months ago, it started showing some odd behavior - every time I started the computer, it would freeze after approximately 10 minutes; firstly, whatever was moving on the screen stopped moving, and then the mouse and keyboard froze when I tried to use them. Since then, I have managed to save my important files on a USB stick in case it got worse by the time I would be able to start trying to repair the computer. And then it got worse.

 

THE ACTUAL PROBLEM

The computer always starts and shows the usual boot screen (Press X to do X etc.), but instead of continuing to the login screen, it continues to a black screen and stays there no matter how long I leave the computer turned on. So basically, all I ever see is the black screen. However, I can spend as much time as I like in BIOS or the F12 Boot Menu, so I guess it's not because my computer freezes. The problem now is that I either want to start my computer in Safe Mode, do a clean install of Windows from my USB stick, or somehow reset my computer. But no matter what I do and which way I try to do so, I cannot get past the black screen. 

 

 

I'm by no means a computer expert, so bear over with me. There may be some missing information, in which case I will do my best to provide it.

Additional information: Nothing overheats (CPU temperature stays around 45-55 degrees C), plenty of space on the SSD, I don't remember anything about major updates but I don't think the problem was caused by such an update.



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#2 usasma

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Posted 29 December 2017 - 08:24 AM

I have spent weeks working on black screen issues (at work) and rarely have any success with them.

Our policy is now to try System Restore.  If that doesn't work, we suggest a backup of the data and then wipe the hard drive and clean install Windows.

 

You can try these steps to attempt to repair the OS:

 

NOTE:  Try a clean boot to see if the problem clears up that way:  http://www.thewindowsclub.com/what-is-clean-boot-state-in-windows
If it does, then different troubleshooting steps are called for.

Here's some repair/recovery/restore options (in this order).   Be sure to backup your stuff if you don't want to take the chance of losing it.:

1 - Startup Repair.  Run it 3 times, rebooting in between tries.

2 - System Restore to a point before this started happening.

3 - DISM/SFC repair (DISM doesn't work with W7, although SFC does)  - doesn't work if you're not able to boot to Windows (see the next quote box to do it from System Repair)
    

Then please run the following DISM commands to see if there's any problems with the system (from an elevated (Run as administrator) Command Prompt).  Press Enter after typing it:
   
Dism /Online /Cleanup-Image /RestoreHealth

    FYI - I have repaired systems using the last command even though problems weren't found with the first 2 - so I suggest running them all.

    From this article: http://technet.microsoft.com/en-us/library/hh824869.aspx

    You can also run sfc.exe /scannow from an elevated (Run as administrator) Command Prompt to check for further corruption. Include the CBS log (located at C:\Windows\Logs\CBS\CBS.log) if you'd like to have a Windows Update expert check it (I don't check them because I can't read them)


4 - RESET using the "Keep My Files" option (W8 calls this a REFRESH; W7 and earlier doesn't have this function)

5 - Repair install of the OS (Thanks to FreeBooter!):
   

"How To Perform a Repair Installation For Windows 8, 8.1 and 10"
    https://www.winhelp.us/non-destructive-reinstall-of-windows-8-and-8-1.html

    "How to Do a Repair Install to Fix Windows 7"
    http://www.sevenforums.com/tutorials/3413-repair-install.html

    "How To Perform a Repair Installation For Vista"
    http://www.vistax64.com/tutorials/88236-repair-install-vista.html

    "Non-destructive reinstall of Windows XP"
    https://www.winhelp.us/non-destructive-reinstall-of-windows-xp.html


6 - RESET using the "Remove Everything" option (W8 calls this a RESET; W7 and earlier doesn't have this function)

If using W7 or earlier, this can be accomplished by resetting the system by use of the recovery partition/recovery disks/recovery drive.
If you don't have them, you can usually order them from the OEM manufacturer of your system ( US points of contact here:  http://www.carrona.org/recdisc.html )

7 - Wipe and reinstall from the Recovery Partition (if so equipped)

8 - Wipe and reinstall from Recovery Media - to include deleting all partitions.
If you don't have them, you can usually order them from the OEM manufacturer of your system ( US points of contact here:  http://www.carrona.org/recdisc.html )
  You can also download W7/8.1/10 from Microsoft starting on this page:  https://www.microsoft.com/en-us/software-download/

9 - A clean install of Windows.  This is a troubleshooting tool - and as such is slightly different from the previous steps.  In short, if it fixes the problem, then the problem was in the software.  If it doesn't fix the problem, then the problem is most likely in the hardware.

A clean install is:
- Windows is installed to a freshly partitioned hard drive with legitimate installation media (W10:  https://www.microsoft.com/en-us/software-download/windows10 ).
- The installation media is only a copy of Windows, not the OEM recovery disks that you can make on some systems.
- Windows is fully updated after it's installed.  That's ALL updates - none excepted.
- NO 3rd party software is installed.
- There are no errors in Device Manager (if you find any, post back for suggestions).

This will wipe everything off of the computer, so it's advisable to backup your stuff first.
Also, it will wipe out all the special software that the OEM added to the system, so if you rely on any of that - let us know what it is so we can figure out a way to save/download it (the easiest way is to create/obtain the OEM;s recovery media)

If unable to find recovery media that has the software (or if you suspect that this is a hardware problem), you can make an image of your system that'll preserve everything in the state that it was in when you made the image.
One drawback to this is that you're making an image of a malfunctioning system - so, if there are errors in the system software, you'll have a nice copy of them :(
Another drawback is that the image of the system will be very large - so you'll most likely need a large external drive to store it on.
But, this will allow you to save everything on the hard drive (although you'll need an image viewer to get things out of the image).
The point here is that, if it's a hardware problem, then you can restore the system to the point it was when you made the image - after you repair the hardware problem.
You can obtain more info on imaging in the Backup/Imaging/DiskMgmt forums located here:  http://www.bleepingcomputer.com/forums/f/238/backup-imaging-and-disk-management-software/

The point of doing this (the clean install) is to:
- rule out Windows as a problem (if the problem continues, it's not a Windows problem as you completely replaced Windows
- rule out 3rd party software (if the problem continues, it's not a 3rd party software problem as you didn't install any 3rd party software)
- so, if the problem continues, it must be a hardware problem.

OTOH, if the problem stops, then it was either a Windows or 3rd party software problem.  If the problem doesn't come back, then you've fixed it.  Then all that remains is setting the computer back up the way that you'd like it and importing your data from the backup you made.

 

DISM Offline:

DISM /Online should only be used when running from within Windows. Run this command instead:
Dism /Image:C:\ /Cleanup-Image /RestoreHealth

Did you also try doing SFC scan while booting off of Recovery Environment or Install Disk? In those cases, the commands are slightly different:
sfc.exe /scannow /offbootdir=c:\ /offwindir=c:\windows

 


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