Right, my 2tb hdd was messing with me so I did some look around inside my computer changed some things. Last I gave up because plugging out the 2tb hdd made it work, I went to spleep, Following morning my 250 and 320 gb samsung spinpoint hdd wont boot, dosnt show in bios, linux or anything. dosnt even make a sound, I tried several things such as; switching cabels etc. Nothing works. I think that my 2 samsung hdd have locked them selfs for some reason, because I dont think that 2 samsung hdd just dies out of 4. since there the same brand thats my conclusion, so how do I unlock em, or are theere any other sugestions what to do? EDIT: these are the 2 hdd. Samsung SpinPoint T166 320GB, 16MB, 7200RPM, SATA 3.0 Gbps Samsung SpinPoint P120 250GB SATA2 8MB 7200RPM