ASUS M2N32-SLI Deluxe w/ cipset NVIDIA nForce 590 SLI MCP 160 G WD Caviar SE Sata Drive (brand New) AMD x2 4200 dual processor ASUS GE Force 7600 GT PCI Express 256MB DDR3 Video Card 1 g memory XP Pro with SP2 We had originally install XP Pro on another 160 SATA HD with no problems (same setup as listed above) the HD crashed, or so we thought, it was stuck in a loop, kept rebooting at the windows logo screen, so we bought a new HD (listed above) installed it loaded the XP pro and much to our surprise it's also stuck in a loop...i have managed to get it to the windows logo screen where it just has the blue bar scrolling across for hours I used the windows recovery console to delete and rebuild the boot.ini, ran fixboot, ran chkdsk and nothing seems to work. reformatted the harddrive (the new one) AND REINSTALLED XP Pro using a floppy to install 3rd party drivers (SATAraid drivers) still the same thing...either I get the BSOD or the looping. I have tripled checked the BIOS to make sure I'm booting from the harddrive...I even tried the f8 at the ASUS screen and choose the HD. I've flashed the bios to the newest version and back again to the original one. When I use the recovery console I can navigate to the windows folder and I see all the files are present in the folder, including the 3rd party drivers. I have uplugged everything and reset the CMOS. by everything I mean everything but what is necessary to boot up....cd drives, harddrives, soundcard, memory chip switching around and so on. this system is less than a year old (Sept 06) so not sure what could be causing all the frustration. Headed to the store now for more CD's and floppies but would appreciate any help or suggestions I can get at this point, I'm completely lost now and I can barely understand the gentleman who answers the phone at ASUS tech support !! BTW I tried the old SATA drive as well (the one that originally crashed)....reformatted it and reinstalled XP Pro, same thing....so reasonably sure it's not a harddrive problem, even borrowed a friends XP Pro CD with same results. FYI: The original prob with the old SATA was it was stuck in a loop, I did manage to get back to the desktop and retrieve the things I needed and noticed that although it's a dual core processor it was only running on one, the other listed was standard pc???? I tried updating that and never got it back to the desktop after that...but I would think a complete reformat and reinstall would have wiped anything I did while updating?? The ASUS motherboard is still under warranty, hopefully it's not that It does show, when booting, that it has a dual core processor, not seeing anything that's not recognized.