Well it look as if I have had this problem. I have 2 IBM 75GXP 30 GB drives, Visiontek GeForce2 GTS 32MB, samsung 256 pc133, 300Watt in-win case, floppy, sony cd-rom, nec zip 100,and running a thunderbird 1ghz not overclocked. I dont know what the problem is. I tried this three different cases...