Computer keeps crashing

Wrong forum. A lot of related information found in Tom's Windows forums.

http://www.malwarebytes.org/

What version of Windows?

Some malware will prevent you from doing most things. If it's windows you can run safe mode and do a system restore to an earlier point in time...or the dreaded Format and reinstall....evrything. However, we don't know if you're running Windows/Mac/Linux. If you are posting from the affected machine I daresay it will be an easy fix as most malware out these days will send you to a website to buy their "miracle pc cure all" and only there. I've never heard of a dvd drive being corrupted...or for that matter even disabled. I'll go out on a limb and say your running windows probably xp. If you go into your bios and select boot from cd drive then boot from your restore disks it should be fine. More information would be extremely helpful....Help us....Help you!