GA7ZXR Ver 1 won't post

Hi,
have a GA7ZXR Ver 1 mother board
AMD Athlon 1Gig CPU
Diamond Viper Z200 AGP graphics card
Mistumi CD ReWrite
Maxtor 80 gigabyte HDD
Panasonic floppy
NIC (not sure of make)
Hauppauge WinTV PCI


Just recently I noticed that on the monitor thin vertical dark stripes
started to appear, they became steadily more prominent, then the PC shut
down as if re-booting. Although the fans continued to run (no display) I
found the soft power switch would not power down. So pulled the AC power.
Applying AC power the PC powered up (without the soft switch being pressed)
two clicks heard from the internal speaker, no display but fans running.


After attempting to re-seat the memory and other pluggable items, still no
bootup, I pulled the memory battery. Left it out for an hour or so and the
PC re-booted and worked for four days, Same thing has just happened again.
This time (two fast speaker clicks) the fans run, sounds like the HDD runs,
the memory LED lights but no display.

Any ideas?
I really would like to have this PC up and running again if possible...
Your held and advice is appreciated

Regards
Mike