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Desktop slow and won't log off

My friend's Dell desktop recently started slowing down and wouldn't log off.  It just stays on the logging off screen even overnight.  I can boot it into Windows 7, but it will only last for about 10 minutes before it becomes unusable.  It will also boot in safe mode.

So far I have:
reset the cmos
ran hardware diagnostics that comes on the PC
used a clean boot
ran malwarebytes and mcaffe in safe mode

I cannot find any problems, but still it won't log off!
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skkinney
Asked:
skkinney
3 Solutions
 
Patrick BogersDatacenter platform engineer LindowsCommented:
Hi

Try running an extensive hdd check like:        chkdsk /f /r
Pretty sure this will shine a light on these issues.
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MikeIT ManagerCommented:
As stated, run chkdsk /f /r on the drive.  Also, try creating a new user profile for windows and see if that helps.
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jcimarronCommented:
skkinney--
See this reference which seems to have solved the slow log off problem for several posters.
http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/windows-7-hangs-up-when-logging-off/e2d1b3a1-19fc-4959-81d6-07480d08096c

However, I am not sure what is actually happening when you say " before it becomes unusable", so cannot offer thoughts at this time.
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skkinneyAuthor Commented:
jcimarron - I tried the clean boot.  What happens is the computer slows down to almost stopped so it becomes unusable.

My first inclination was that the hard drive.  I had already tried check disk.  Running it again.
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skkinneyAuthor Commented:
Ok, disk check comes out fine.  Computer boots with a clean boot and will shut down if done immediately.  If any program is launched, the computer almost stops running and if you can get to shutdown off the start button, it may take an hour to shut down.

Any ideas?
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skkinneyAuthor Commented:
Ok, I suspect a hardware problem.  The computer is going to be replaced.
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