Hi there, be prepared for a long post Today I built my first PC from scratch. Don't get me wrong I researched quite a bit and Ive done seperate components before. But this time was the first time that I tried to do it completley by myself. Bad mistake it would seem. The components that I bought were: GigaByte GA-81955X Royal - i995 Chipset, supports 64 bit, compatible with P4 processor, 1066 max FSB Pentium 4 650 3.4ghz, EM64T 800FSB 2 * 1GB sticks of DDR2 5300 RAM Asus Radeon X800XL PCI-E gfx card Thermal Take TR2 470W power supply I already had a 200gb HDD and a DVD-ROM drive, so I used those. I didnt install a Floppy drive as I have never used one, and didnt think it necessary. Heres the problem. The pc will not get past the windows loading bar, the blue one right after the bios has finished doing it's stuff. The load bar will have one blue bar go across then a really quick blue death screen will flash up, then the computer restarts itself. This happens over and over in a loop. Now I dont know where to even start. I've tried going into BIOS settings to have a look around but everything seems normal to me. The only thing that I would say looks odd is a section on the startup sequence it says "Running IDE Scan..." This then returns: IDE 0 - Not found IDE 1 - Not Found IDE 2 - Not Found IDE 3 - Not found I thought maybe this was something to do with the primary and master. But I swear I have these the right way round. In the bios settings, It auto detecs both the HDD and the DVD-ROM drive. So I dont know whats going on there. Is this a compatiblity issue, something maybe with Windows xp Pro SP2? Or is there something wrong in the hardware? Any help would be great, thanks in advance.