I just assembled a home built PC. Unfortunately, it is not coming up at all. All I hear is a series of 3 beeps. I cant say exactly where the noise is coming from. The monitor is showing nothing at all (like it's on standby). The DVD rom is not responding to the eject button. The mouse is lighting up but not the keyboard (both are usb)
Specification of system
Motherboard: ASRock M3A770DE
CPU: AMD Athlon II X3 445
Case: IN WIN Stealth Bomber B2
Hard Drive: Western Digital 1.5 TB Caviar Green SATA Intellipower 64 MB Cache Bulk
what version of the bios are you using? The beeping on start up may be the fault you need to trouble shoot the boot issue you are having. Usually one short beep is the code for a clean boot and the computer will post and run shortly after. Any other beep code will let you know what isn't working. 3 beeps is usually the ram code I think, but it differs for each bios and motherboard type so you might want to check the manual and see if it has a troubleshooting beep code guide.
and 3 beeps is the memory code so I would check and see if the memory is seated in the slots fully... pull it out and push it down so it puts the locks down completely on it's own. (This may require a bit more pushing than you think it should.)