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Windows 7 Black Screen

After windows 7 users sign into their PCs they will get a screen that is black or dark with only the cursor that shows.  It will sit there indefinitely.  The user can do a CTL-ALT-DEL and go the task manager.  If we kill the run once processes or the explorer.exe process (then manually re-launch this one) the PC will finish going on into Windows no problems.  It will remain fine until they reboot again.
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gwlanks
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gwlanks
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7 Solutions
 
nick2253Commented:
Is this all (or most) users in your network?  If that's the case, then something is probably wrong with either the drivers (if all the computers are the same) or the software you are running at bootup.

Try booting in safe mode.  That would tell you if the problem is with Windows itself or the software/drivers installed on the computer.
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helpfinderIT ConsultantCommented:
try to check your Registry (regedit from Start>Run).
Look for this
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
on the right pane there should be a SHELL string and value in that string should be explorer.exe
Check it is you have it like this (and nothing else)

Would be wise to backup registry before any change is made

if this starts to happening suddenly, it could be job of some malware of other kind of infections. try to scan your computer with some antivirus, also download and install Malwarebytes or SuperAntiSpyware. You can also make bootable CD/USB Kaspersky Rescue Disk 10 and make a AV scan when system in not booted up
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gwlanksAuthor Commented:
That value is set.  Would it be a start up application that needs to be disabled?
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nick2253Commented:
Before you start disabling and changing things, try booting in safe mode.  If it works in safe mode, then we can be reasonably sure there's a program/driver that causing problems.  If it doesn't work in safe mode, it's probably not a program/driver, and instead an issue with Windows.

If it's the latter, try running "sfc /scannow"  This will attempt a repair of the core files in Windows.
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helpfinderIT ConsultantCommented:
I am almost sure you will solve the problem also by putting a script which will start explorer.exe process under Startup items - but that´s just solving sympthoms not a cause.

you can try to run also sfc /scannow command to check driver consistency (plus that AV/malware scan I mentioned above)
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David Johnson, CD, MVPOwnerCommented:
autoruns from sysinternals can be your friend here.
Autoruns for Windows - http://goo.gl/qVB4I
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MereteCommented:
Try a start-up repair if a system restore is not successful.
Restart the computer
Press F8 key  a few times and select Repair
 then in the System Recovery Options select Startup Repair.
Startup Repair: frequently asked questions
http://windows.microsoft.com/en-us/windows/startup-repair-faq#1TC=windows-7
Startup Repair
http://windows.microsoft.com/en-us/windows7/products/features/startup-repair
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LearnctxEngineerCommented:
I usually see this with software like Avast AV which has some rubbish update the black screens the OS on boot. Terminating the runonce process fixes it and so does terminating the updater executable. Try running autoruns and/or process explorer from sysinternals while it's happening to get an idea of the cause. Check autoruns for any runonce entries. Check process explorer for the launch options. If you don't know how to use these tools check out How To Geek, they've just run a guide on using these tools.

http://www.howtogeek.com/school/sysinternals-pro/lesson1/
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gwlanksAuthor Commented:
I think we have figured out our problem is associated with a new anti-virus network software that has been rolled out.  Thanks for all the wonderful suggestions and feedback.
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gwlanksAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for gwlanks's comment #a39989548

for the following reason:

The problem was our software it appears.
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gwlanksAuthor Commented:
All great solution possibilities.
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MereteCommented:
Thankyou!  gwlanks
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