[CentOS] Unable to POST after suspend

Hi,

I just tried the live CD for CentOS 5.0 on a desktop computer and
decided to see if suspend worked. It seems it did, but I'm unable to
start the machine again.

It's a DIY system with an Asus K8V-X motherboard[1], an AMD Clawhammer
3200+ and 1 GB of Kingston ECC RAM. The system has been perfectly stable
despite being utterly abused on a daily basis for almost 3 years.

I've tried:
- unplug power cord
- reset CMOS
- remove BIOS battery
- remove all RAM

When resetting the CMOS, the CPU FAN and hard drives power up, which it
has never done before (IIRC). This is the only way I can get anything to
power on, there's no reaction whatsoever when I hit the power or reset
buttons.

Please don't tell me that clicking a button in a GUI menu has broken my
favourite testing PC permanently. Any hints would be very appreciated.

[1]
http://www.asus.com.tw/products.aspx?l1=3&l2=15&l3=68&l4=0&model=1119&modelmenu=2