I looked around for "DDR and DDR2 motherboard" on Google, and found that manufacturers made these boards to enable one set of memory type at once.

I suspicioned these different RAM modules...

Nice job, dood.
Happy computing, I suppose you'll be a little busy playing Chicken Invaders...

Oh, glorious day...

So, did you...?
1.) clean the disc
2.) try new CD drive
3.) format hard drive with UltimateBootCD
4.) decide to start praising the pagan gods and "Mr. T"

4th option I...

Alrighty, this computer is either actively resisting a reinstallation of Windows, or there is a problem with the CD drive
Looking at these:
1.) CD drive might not have power, or enough to work...

Ah, so we're messing with CD issues.
I'd probably go and get a new XP disc, whether it's storebought or an '.iso' download off some P2P software. You could even clean your disc with water and...

This seems like a hard drive problem; one that is helplessly corrupted and thinks a single game occupies 19Gb. Judging the problem you have with the installation CD, I'm guessing that file you're...