Just built a new PC. No display on monitor

[ArchDukeStavros]

Hey, I just built my first PC and i believe i have everything set up properly in the case. But when i turn it on, the fans run, LED's come on, everything seems to be getting power but i get no display on my monitor. Also, i get no beeps. Any help would be appreciated. Here are my specs.
GPU: XFX HD Radeon 4890
Motherboard: ASUS P7P55D
PSU: Rosewill 850W ATX12V v2.2
RAM: Corsair XMS3 4G (2x2gb)
CPU: Intel Core i5 2.66GHZ quad core Model BX80605I5750

 

[Ritwik7]

To be able to hear any beeps you will require a small motherboard speaker. Do you have one?

Ensure that your monitor is properly connected to the card. Try running your system with a single stick of RAM and see whether it POSTs. Also check whether your RAM modules are occupying the slots closest to the CPU.

If it doesn't work, then I would advise you to disconnect everything and reconnect components one at a time to the motherboard and check for POST after each new addition.

 

[ArchDukeStavros]

I do have the small motherboard speaker. I have tried with a single stick of RAM. And it is occupying the slot closest to the CPU. I'll try to connecting everything once at a time. Thanks

 

[ArchDukeStavros]

Seems to be working now. Thanks

 

[Ritwik7]

Any idea what had caused the problem? Or did reconnecting just solve the issue?