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winlogon.exe high cpu usage


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#1
fho

fho

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Hello,
One of our employees gave back his laptop that was not booting.
The winlogon.exe process uses between 90 and 100% of the cpu. It boots but very slowly.
The problem doesn't happen in safe mode.
I don't know if this can be a malware or something else.
Thanks for your pieces of advice
Fred
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#2
Cranky

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Hi fho !!
Welcome to GTG,

It might be a malware infection.
Click on the link below and follow all the steps instructed.
Then post a Hijackthis log in THAT forum.
If they give your computer a clean bill of health and you are
still having problems post back to this topic and someone
will be glad to help you. :tazz:

http://www.geekstogo..._Log-t2852.html
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#3
fho

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Thanks for the info Cranky,

may I run all these tests in safe mode ? I'm not sure I will even be able to read the usb key while the processor is 100% used by winlogon.exe.
Will a malware be detected in safe mode? (the processor is free in safe mode)
TIA
Fred
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#4
Cranky

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Yes, I would say that most of these can be ran in safe mode.
The online scanners will have to be ran in safe mode with networking.
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#5
fho

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Cranky,

After having launched all malware detection tools, the issue was still there.

I found a thread of someone who had the same problem and solved it. It also worked for me. Here is the solution.

Delete the contents of C:\windows\csc which resets the offline files & folders sotore. There is also an alternative method of cleaning up the offline files:
http://support.micro...om/?kbid=230738

I printed the Malware Removal procedure which is very useful and complete. I'll use it again.
Thanks for your help. :tazz:

Fred
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#6
Cranky

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fho

Just glad to you got it fixed. :tazz:
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