alright, im having this same problem with a WD 160gb HDD which is less than half a year old. when i boot up in normal or last known good configuration mode, it gives me a BSOD but only flashes it and i casnt read the error. the little bits i have taken from the flashes is that it appears to say "unknown boot (something)". when i boot in any of the safe modes, it stops booting at "Mup.sys" file and restarts shortly after stopping loading all the minimum drivers. ive pretty much narrowed it down to the HDD because of the fact that i try to reload windows and, after i load the SCSI drivers windows needs for SATA drives, the windows install process stops when it tries to read the hard drive, which is right before it gives you the list of drives to install windows. im gonna try swapping my drive into a friends computer but i dont have that kind of poopie readily accesible so its pissing me off i cant do anything. i have reset cmos so many times its not funny, swapped RAM, everything basically but put in a new HDD cause i dont have a spare laying around :-(