The power at my house recently went out and now after booting my computer up (it is connected to a surge portector) my CDrom, DVDrw and built in memory card reader has disappeared from bios and "my computer". They both open and shut and I can here it reading a disc when the computer is on but they are not recognized. Every now and then when I turn my computer on it will constatly read the disc drive and it smells like something is burning. What could cause this? I'm think about buying new stuff to build a computer but I dont want to if this is an easy fix ... any suggestions?