Good idea. can you suggest any software to do that?

>Have you tried running RAM-checking software on the PC? I've run into a few occasions where a bad memory module was causing weird behavior in Windows and eventually resulted in crash where Windows couldn't recover (e.g. registry crash).
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>>Possibly a virus. Or some piece of third party software that Windows does not like. As a developer, I experiment with many software. Any of them could have caused the problem.
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>>MY work machine has the same problem. It was a new machine with a image of Win7 placed on it. No product Key, No Activation Key, nothing. I have asked the IT department to install a real copy of the OS, and yet the problem comes back. No one else in the office seems to have the issue, only me. :-(
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>>>This is starting to sound like a malware infection. or bad hardware. It is not normal behavior for Windows 7. Your experience should be much better than with XP.