Jerol,
 This sounds like a bad power supply to me.
These supplies are switch mode and can start erratically or not at all.
Possibility you could sub one in to see, or assuming this is an ATX unit
 a power supply tester is available for about 15 dollars.
Another possibility is bad electrolytic capacitors on the mother board.
Look for swollen tops and/or leaking around the bottoms.
HTH,
Hal Seabolt
 

-----Original Message-----
From: Personal Computer Hardware discussion List
[mailto:[log in to unmask]] On Behalf Of Jerol
Sent: Sunday, January 27, 2008 3:32 AM
To: [log in to unmask]
Subject: [PCBUILD] Post Failure

I have a problem that is strange. Turn on computer and no post. Turn off
computer and disconnect power then turn on computer and it starts. This has
happened for a week. Now I can get nothing. The HD spins, the fan runs, the
power light is on but no Beep for post and no startup. I have stripped it
down and reset CMOS checked all the components including the keyboard and
monitor on another computer and all works fine. Any ideas would be
appreciated.

Computer Description   Home Made in 2003 NEC ATX case
Motherboard  Aopen AX34-U
Processor Intel Celeron 1.1AGHz , FC-PGA2, MfgSKU:BX80530f1100256
DIMM memory Kingston 512MB PC133 168 Pin
Hard Drive Maxtor DiamondMax Plus 8 6E030L0 30GB ATA/133 7200RPM
Toshiba SD-R1512 DVD 16x + CD-RW 48x24x48 Combo Drive
Creative Lab Optical Mouse and PS/2 mouse  NEC Standard 101/102 Keyboard
Video Capture Card ATI All-In-Wonder Radeon 7500 AGP
Modem: Best Data 56FWPCI
Ethernet: Realtek RTL8139 Family PCI FAST ETHERNET. NIC
Operating System Windows XP professional
Chipset:  VIA Apollo Pro 133T

 

        The NOSPIN Group has added a new feature on our website,
           web based bulletinboard for questions and answers:
              Visit our sister website at http://nospin.com

         PCBUILD maintains hundreds of useful files for download
                     visit our download web page at:
                  http://freepctech.com/downloads.shtml