Hi daniweb, I've had this problem for several months. My computer should be clean of malware- i got help from another website for that.
My computer freezes (and makes an unpleasant sound- a sharp "chugging") for about 2 or 3 seconds and then restarts. This happens randomly, mostly when I'm on world of warcraft- however, as I am pretty much always playing it, i don't think the problem is exclusive to world of warcraft. also i believe i've had this problem prior to playing world of warcraft.
There are no errors logged in the event viewer that are related to the crash.
Hard drive: 232GB
Memory: 3070MB RAM
Processor: Intel(R) Core(TM)2 Duo CPU E4500 @ 2.20GHz (2 CPUS)
Gfx card: NVIDIA GeForce 9400 GT
If there is any more information you need, please ask. Thanks in advance.