more computer shut down problems

[tmauch]

You guys helped me out about a month ago with a problem I had where my computer would randomly (and sometimes not so randomly) shut down down without warning.

The problem seems to be back. It just randomly shuts off. Not as much as before, but now there are other problems. I was able to run a Malwarebyte's Anti-Malware once, but that was before I updated it. THen the computer shut down the two times I tried running it again, and now it won't even open - I get "such and such file is not a valid Win32 application."

Tried updating Cure It, but it wouldn't finish downloading the updates. Super AntiSpyware just won't open.

I do have a Hijack This log. Any help is much appreciated!

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[Broni]

I see no infection. Topic moved.

[Dusty]

Does your system auto-restart after the shutdown?   

Any error entries in an Event Log?

[patio]

Remove a side panel of that machine and check to see if all fans are operating properly.
Heat is one of the more common causes for shutdowns.
Also it may be time to do some housekeeping.
For this you want to get a can of compressed air.
Blow out all heatsinks and fans ...Caution: Use a QTip to hold the fan blades in place when blasting near them to prevent damaging them.

As always when working inside the case remove all power sources and take anti-static precautions...