I highly doubt the 2 cdroms. I have three. A normal, a cdwriter, and a dvd drive. I found that in my system it was over heating. Check your bios for the auto/emergency shut down/restart. Check the temps too. On the internet you can find your cpu's normal temp. If its too hot. replace the heatsink/fan. Add a fan. Or run it with its side off. Thats what i do, and dust isnt a problem.
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