We have a win7 workstation is a Win2003 domain that is acting crazy. Occassionally the workstation freeezes, the desktop is present but no icons or start bar and task manager cannot be accessed. I know that one of the causes could be malware (we use Sophos) but all the scans for malware have come up negative. What else should we be looking at?

Get process explorer from sysinternals, find the bogus process that is taking cpu frams un-necessary and suspend it by right clicking. The get malwarebytes and scan your computer with that. You can also use a different user profile with admin rights to have more freedom with cleaning.Please do not forget to select the best answer if it helps you! The Ultimate computer newbie guide since the discovery of spoon feeding! The Computer Manual

The "going crazy" does not happen all the time and when it does it is unexpected. Can the Process Explorer log processes so that you can view after the craziness and see what process went wild?

How about you do your own research...Please do not forget to select the best answer if it helps you! The Ultimate computer newbie guide since the discovery of spoon feeding! The Computer Manual

Get process explorer from sysinternals, find the bogus process that is taking cpu frames un-necessary and suspend it by right clicking. The get malwarebytes and scan your computer with that. You can also use a different user profile with admin rights to have more freedom with cleaning. Please do not forget to select the best answer if it helps you! The Ultimate computer newbie guide since the discovery of spoon feeding! The Computer Manual

Get process explorer from sysinternals, find the bogus process that is taking cpu frames un-necessary and suspend it by right clicking. The get malwarebytes and scan your computer with that. You can also use a different user profile with admin rights to have more freedom with cleaning. Please do not forget to select the best answer if it helps you! The Ultimate computer newbie guide since the discovery of spoon feeding!

You may use performance monitor, and create a collector for CPU usage. Not sure Xperf could do this in Windows Server 2003, as I have limited experience on Xperf.

Hi, Did you resolve the problem? Please feel free to give me any update. Best Regards, Miya Yao TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.comThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.