Hello, I have a problem, My computer wont boot up, no signal at the monitor.
The story is, I had a MSI motherboard and it died, so I had warranty and I got a new motherboard.
It didnt work but at least it turned on, so I buyed a new GIGABYTE GA-MA74GM-S2H rev.1.1 motherboard,
and the same thing happenes, the computer boots but nothing comes on. So I tested the power supply, ram, graphic card, and the processor, and the Gigabyte motherboard with another Processor, it boots.
But with mine processor it doesnt boot! I have a AMD Athlon 64 X2 6000+, and the one that worked was AMD Athlon 64 3200+. The next day some good friend of mine told me to update the bios to a newer version, so I did
it, and nothing. It still doesnt work! I have no idea why it doesnt work with my processor but it works with a older one. So everything is good and works, the bios has the newest update F3, but nothing comes on the monitor, fans work, lights work, I am sick of this computer, but this is my computer:

Motherboard: GA-MA74GM-S2H (rev. 1.x)
Processor: AMD Athlon 64 X2 6000+
Power supply: Corsair 550Watts
RAM: Kingstone DDR2 1GB, 667 Mhz
Bios: Newest F3 update from the gigabyte site.
What could be going on? Please help, im out of ideas.

Configuration: Windows XP
Motherboard: GA-MA74GM-S2H  (rev. 1.x) 
Processor: AMD Athlon 64 X2 6000+
Power supply: Corsair 550Watts
RAM: Kingstone DDR2 1GB, 667 Mhz