Just put my first build together and am having a serious problem... after 3 days of tests I still cannot get anything up on the screen... havnt seen the BIOS screen once... the computer just turns on and does nothing, or sometimes it will turn on for about 15 seconds then restart and continue the loop. All fans and LEDs turn on, just nothing on the monitor. This is tried and tested on different monitors using different cables/ports and GPUs.
Today I went down to Maplin and bought a motherboard speaker... sure enough when I turned the computer on today I got continuous short beeps.
My motherboard manual states the problem to be:
"Continuous Short Beeps: Power Error"
Now I need to know how I can find out exactly what the problem is. Is it my PSU? Is it my motherboard? Is it a cable or connection? What can I do to find out what the problem is.
All connections to the motherboard are correct and unfortunately the only other PSU I have is 200W max and probably has wrong connectors.
None that aren't in the checklist. I keep it up to date with all the good troubleshooting ideas I come across either on my own or through other forum members. That checklist solves 95% of these types of problems if you perform EVERY step. It's possible a part is DOA if you really have performed every step, but it's far more often user error.
So there was no change when using each stick of RAM by itself? Are you 100% sure the 8-pin CPU power connector and the 6-pin PCI-E power connector are both firmly plugged in? What was the result of the breadboarding suggestion at the end of the checklist?
The breadboarding thread has a paragraph about building the PC in stages and what you should see (well, hear) at each stage.
Power supply checkout:
Try to borrow a known good PSU of similar capacity. Or better yet, see if you can test your PSU in another working system. If you cannot do that, try to borrow a DMM to measure the voltages. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.
You can turn on the PSU by completely disconnecting the PSU and using a paperclip or jumper wire to short the green wire to one of the neighboring black wires.
This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead.
If all of the outputs are good, reconnect the PSU and repeat the checks.