My first build, trouble installing XP blue screen of death

Hi everyone, I've just completed building my first custom computer and I'm getting a blue screen of death when trying to install windows XP. I'm using an FX-8120 amd processor, an MSI 970A-G45 motherboard, 2X2GB crucial DDR3 ram, a thermaltake 500 Watt ATX power supply, an Nvidia GTX 450 and the harddrive from my old computer, a Seagate Barracuda 7200 Rpm 500 GB hdd. Everything is brand new except for the hdd. When I try to install windows XP I formatted the hard drive because I figured it would be best to start from a clean slate. I booted from the XP CD and began the installation, then the computer needs to restart and continues the installation. At this point I get a blue screen of death with the error message IRQL_NOT _LESS_OR_EQUAL. I'm not really sure what this means, but I tried installing XP on a different hard drive with the same issue and I've tried using a friend's XP disk as well (he has since upgraded to Windows 7). After a couple days of playing with it, I got frustrated and installed Ubuntu instead. Ubuntu installed and runs fine. If not for the fact that I can't play any of my games I would just use Ubuntu, but I bought XP, it's not pirated or anything, and I just can't figure out why it's not working. The other thing I should mention is despite it being my first build, I got pretty ambitious and built a case for it entirely out of lego. I can't imagine this contributing to my issues, but just in case, I thought i should mention it. Does anyone have any ideas? Thanks in advance for the help.

Hi onemanbucket,
welcome to WTT

See http://technet.microsoft.com/en-us/library/cc957609.aspx

Sounds like it may be a memory (RAM) problem. Try running with one stick in the first slot only.
If problem persists, try in the 3rd slot and if still getting that error, remove the stick an repeat the procedure with another stick of RAM etc.

If no luck see User Action in the above thread.

Cheers,
Lee