Windows 7 and processor problem

I am not professional support worker or administrator. Also I have only a little knowledge about hardware. One week ago my computer started doing something weird. Couple of times per day I get BSOD with the following message:

“a clock interrupt was not received on a secondary processor within the allocated time interval”

I have Windows 7 with all patches applied. Processor of computer has 32bit architecture. My processor is not clocked. I can see no specific errors in Even Viewer. What can be the problem?

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