I recently finished my first complete build from the ground up.  I am using a ASUS P4R800V-Deluxe motherboard, Pentium 4 3.0 GHz processor, with a Western Digital 40 GB IDE HDD.  I also have a DVD ROM, CD-R/RW and Floppy from my old Gateway computer in it.  It's powered by a 450W power supply.  At first I ran into some grounding problems with the board contacting the case, but resolved those, and have the computer booting up and posting fine.  I originally had 2 256 MB PC3200 DDR RAM from AMPO made from Wintec in the system.  I booted it up with the Windows ME startup disk, ran fdisk and format on the HDD just fine, I then inserted my Windows XP Update disk into the DVD-ROM drive and restarted it, it read the CD, began to load the files and when it got to the point when it said "starting windows", the computer just shut off without warning.  I trie
d the same thing with the CD in the CD-R/RW drive and the same thing happened.  I then tried it with the jumper on the HDD on master, cable select, took the jumper completely off, no change.  I downloaded memtest86+ and made a boot disk out of it and ran that, and 1 or 2 seconds after the program loaded and began running it the computer shut off.  I tried it with each ram stick in the DIMM slot individually and it shut off sooner than it had with both.  Though, when I start up the computer and enter the BIOS it reads the RAM and displays the correct amount of memory.  This lead me to believe perhaps the RAM was bad.  I then went out today and bought a PNY 512MB PC3200 DDR400 RAM and tried that running the memtest86+.  The test ran a couple seconds longer than it had with the other two sticks, but the computer still shut off.  I tried it in each DIMM slot and ran the test for each one and for some slots it ran longer than others, but inevitably at some point it shut off.  I'm at my wits e
nd and have no idea what to do, PLEASE HELP ME!!!!!!!!  Thank you so much!!!!  -Clay

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