Can't boot up the new computer

Intel Pentium Dual-Core E5200
OCZ DDR2 800 2GB x2
MSI P43-NeroF
Sappphire HD4760 GDDR4 512MB
Seagate 320GB HDD
Pioneer DVD-Rewriter
Antec EA380

I set "boot from DVD-Rewriter" in BIOS.
The computer doesn't have any reaction after I put into the Windows XP installation disc.
Then I copy all the file into a USB memory stick and try to boot the computer. It's failed.
I tried to change the slot of RAM and failed to boot.
What kind of problems?

change another windows installation disc and try again.

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