I wanted to add that I tried these things done so far:
Removed mobo from case and power up (Post Code 26)
Removed RAM, Installed CPU and RAM (RAM Error C1, if i remember) continus beeping
Removed CPU, installed RAM & Video (Post code 26)
Tried old working PCI video card
Tried New PSU (450W)
Tried old p4 1.7G/400mHz CPU (Post code 26)
Tried moving RAM to different slots, and using just 1
Removed mobo from case and power up (Post Code 26)
Removed RAM, Installed CPU and RAM (RAM Error C1, if i remember) continus beeping
Removed CPU, installed RAM & Video (Post code 26)
Tried old working PCI video card
Tried New PSU (450W)
Tried old p4 1.7G/400mHz CPU (Post code 26)
Tried moving RAM to different slots, and using just 1