Problem rebooting after on for while

[cartrbl]

I checked the forum first but nothing stands out so here goes. I built a PC with a P4 3.06 Ghz for 1st time ( I normally use Celeron, but same mobo). Two problems occur: 1.) when trying to install software via CD-ROM, the OS will lock-up completely and 2.) when the computer is reset, it will freeze to the POST and display what I call "The Matrix" screen, with vertical snow lines. After shutting down for about 5 mins, then turns on fine and then can load software. But if rebooting goes right back to #2 again. Any help is appreciated.

Parts list:
-WD 250 GB SATA300 2500JS
-LITE ON 16X SHM-165H6S BLACK OEM LIGHTSCRIBE DUAL DVD REWRITABLE DRIVE (2)
-MSI PM8M3-V VIA P4M800CE CHIPSET MOBO
-PENTIUM 4 524 3.06G (533MHz)
-1GB DDR400
-Win XP Pro SP2