Machine was working great. Running XP at 128 Mb of RAM. Decided to bump up RAM to 512 Mb. Purchased two 256 Mb modules and inserted them (even used electrostatic wrist strap). They are the correct modules for the PC.
Booted up the machine and like magic the X!0* wouldn't boot. Nothing comes on the screen. It sounds like it is reving up to boot, the CD ROM light hits, the hard drive light quick flashes, the battery light hits. No lights come on up on the keyboard plane (Num Lock, etc). Then it kind of revs down and restarts over and over. I can't even turn it off with the power button, I have to remove battery and unplug AC. I have tried booting to CD and floppy, no dice.
What to do?
Anybody got any idea what has happened?