Ok, I've got this problem. Recently I adviced my friend on what computer to build for himself. And now I've got the problem of him not getting it to work properly. The hardware is all assembled and everything. It turns on, off, etc..
But the problem is that I can't get windows to work. It either says that some files are missing or it gives me these weird errors during setup... its really driving me nuts

I've tried different cd drives. Tried different XP SP2 disks.
Oh yeh, my friend says he got the ram for $45 a stick. I told him that its too cheap to be real, but it looks real. I dunno... maybe this could be the root of the problem
The Specs:
GIGABYTE GA-K8NXP-SLI ATX AMD Motherboard
AMD Athlon 64 3500+ 1GHz FSB 512KB L2 Cache Socket 939 Processor
SAPPHIRE Radeon X800PRO 256MB GDDR3 PCI-Express x16 Video Card
2x Samsung 512MB DDR 400 (PC 3200)
Western Digital 250gb SATA
THERMALTAKE Silent PurePower TT-420AD(DUAL FAN) 420W Power Supply
Some RW drive
DVD-Drive
Floppy
CREATIVE Sound Blaster Value