Just rebuilt Computer K7N2 Delta motherboard, 1.8 Duron CPU, Qtec AXT 350w PSU, AGP*4 card. When I switch the power on it powers up the lights flash on the rom drives but no display on screen, it keeps bleeping about every three seconds.
Most modern graphics cards have a locking clip at the far end. Make sure that this is fully locked - this will ensure that it is properly installed. Also, if there is a fan attached, make sure this is spinning freely.