My Specs: Motherboard: ASUS P4P800 Deluxe Video Card: ATI All-In-Wonder 9800 Pro Ram: 1 GB, Kingston I am having major problems with my computer. Something is causing my hard disks to develop bad sectors. I replaced the power supply to an Antec NeoHE 500 watt and I bought a new surge protector. Now I am getting video display problems to point that I cannot do anything on my computer. The display is bad even on the startup screens and in BIOS. My registry started having problems and I received an error in Event Viewer that something was corrupt and to do LODCTR /r:filename. I tried a different hard disk, video card, and monitor. I put in all new psu and SATA cables. I plugged the SATA cable into the second SATA port. I updated all drivers and the Intel chipset. I updated the BIOS, and reset CMOS and set BIOS to defaults. I swapped the RAM to different slots and I checked all the connections on my motherboard. My motherboard is still under warranty and ASUS has advised me to run MemTest-86 to Pass 7, which I am doing right now. The display is a mess (black and blue vertical lines with some red boxes as well; the letter V is in the blue lines), but it looks like after Pass 6, it has no errors. So what do you guys think is wrong with my computer? Thanks in advance!