I have a cdRW combo drive and a cd drive. I notice when my computer tower gets warm, my bottom cd drive works fine, but my CDRW Combo drive dont work when i put in a cd. I have to let my computer rest for a few hours or keep restarting my computer to get the drive working again. It doesnt seem to be damage, it just stops working when my computer gets warm. Also my cd comb drive is newer then my cd rom drive, the cd rom drive i had since what 99. The dvd comb drive i bought in 2005. What do you think is going on?