I have such a thing with same board and without the CMOS battery it will not power up.
http://images10.newegg.com/NeweggImage/productimage/13-135-194-02.jpg shows the battery in the bottom left corner.
Can a motherboard fail due to a bad virus/ Trojan/ worm on a HDD? I have my friends home built computer and well it was working, but not now something is not right. I am leery of the components, I do know it has an:
ECS 760GX-M HT1600 mb
AMD Athlon 64 3400+ processor
Seagate Barracuda 7200rpm 500gb HDD
ASUS N7600GS SILENT/HTD/256M GeForce 7600GS 256MB 128-bit GDDR2 AGP 4X/8X Video Card
Unknown size to PSU
It was built for my friend by someone else with her previous HDD to fill in for a tower that she had lost the MB to, according to a tech she took it to. And now this tower is doing the same thing the other tower had done. It was working when I got to her house all up and running just needed what I was told a driver for the ethernet. I downloaded one straight from realtek web site on to a CD-r and put it in restarted computer and well it happened.
Getting to the point you can hear the hard drive running and see all fans including PSU but now video. When u touch a button on 3 different working monitors its power saver mode hit any key or mouse button to get working. Well nothing happens. I noticed this tower has no battery in it if this might have anything to do the problem or not? Or if its her HDD with a bad bug I have no clue?
I have changed cords, monitors, surge protectors and anything on the outside, clean the inside of tower up like crazy trying to get some kind of change but still natta?