1 short beep at startup, no video

coaxial

Honorable
Oct 8, 2012
3
0
10,510
Hello, I have a problem. I've built new config of my old CPU i7 870, Asrock mobo (don't remember its model, doesn't matter as I've changed it), Noctua NH-D14, my 2 old ddr3 rams of 2 gb each, old ssd vertex2 and EVGA Geforce GTX 670, powered by Corsair 750 Wt. I've isolate the fan handles of Noctua from GPU and booted, everything went fine, I've updated the drivers and rebooted, the PC won't boot after all, no beeps. I've checked everything and found some bent pins on mobo socket. I've bought another one, now I have Intel DH55HC. The speaker beeps once when I boot, then nothing happens. No beeps, no video. Also the GPU fan starts after boot but stops in 5 or 6 seconds after that. If I remove the GPU (so the integrated GPU should work) there is one beep and about 5 seconds after a serie of 2 continuous beeps takes place. Again, no boot, no video. Removing the RAM gives me 3 beeps.
What could be the reason? Unfortunately, I cannot test my components in another system.