Having a major problem. Re-built a PC for someone: *new*ECS M400 board *new*512mb DDR Kyro II 64mb vid-card Western Digital 40gb HD Lite-On DVD burner 32X CD-Rom 56k modem AC97 onboard sound 1ghz Athlon Went to boot up just to make sure everything worked and it would get to the XP slpash screen (with the blue staus bar). As soon as it tried to initialize the desktop/log-on screen it would shut down immediatley. Booted from the WinXP cd to do a new install. Made it to the "ready to install" screen (options to press ENTER oto install, repair etc..). It dies immediatley if you press enter. Removed the HD and placed it in another PC and did a quick format. Placed back into case, tried to install from the CD again...same result. Apparently the boot sector on the HD remains as when I tried to boot up it said something to the effect of "NTDLSR.??? not found ctrl+alt+del to restart" After all this I discovered that it (previous XP install) may have been infected with a form of the sasser virus (lsasse.exe errors). So do I need to do a full format, and could this be causing the shutdowns whenever it tried to boot originally and now when it tries to access the HD to do a fresh install? Whew!! That was a mouthful!! Thanks in advance for any help!