Been trying to upgrade my system a bit, originally assembled about 5 years ago. Motherboard is an Intel D865PERL running a Celeron 2ghz, 478 socket. Like I said, 5 years. According to support, this board will support 3ghz Pentium 4. RAM is over a gig. BIOS has been updated. (that was fun). But when Pentium is plugged in and turned on, nothing. Other than fans, nothing seems to happen. No screen display, no beeps, nada. Any Ideas?