Computer Build Problem.. Why Wont it work?

Question

i Built a computer all the right ways.... connected all the wires to the wright place and when building i even used a anti-static armband .

Finnaly i finished....i pluged it in and pushed the power button.......nothing.... i tried to reset all the parts...re connect all the wires..but still nothing...this computer cost a lot and i dont want to put it to waste..

Answer 1

Pull all the cards out.

Just have a motherboard, PS, PC speaker, and the on/off button and a processor.

You should at least get beeps.

Then add back the memory, and the cards. Make sure the motherboard is not shorting to the case.

Answer 2

OK, when you say "nothing" do you mean that the power supply fans don't start or anything? Well, make sure that the case power switch is properly connected to the mainboard. There is probably an auxiliary power connector as well (square, with four pins). Then note that you probably have TWO power switches; "hard" power on the back (usually a rocker switch) and "soft" power on the front (a switch that is wired to the mainboard). Make sure hard power is on, wait ten seconds, then hit soft power.

If that doesn't work, remove everything EXCEPT the mainboard / processor and try again.

If THAT doesn't work, buy or borrow a power supply tester and make sure the power supply is good. If you purchased the case from a reputable local dealer they'll test the power supply for you. For that matter, if you purchased everything at one place haul it all back and see if they'll check it over for you.

Answer 3

Usually this happens when you don't connect the power switch up to the motherboard with the correct polarity. See if it works when you change the polarity of the motherboard power connector.
If this is the problem the PC will boot up straight away when you switch it back on and you may need to change some other wires also to get your LEDs working.

Answer 4

First look at the most important part of power. The power supply unit (PSU). Does it power up? The fan spins?

If so, then look at your CPU fan. Does it power up and spin? If so, then it is getting power from the PSU. Are your memory seated correctly? Do you get beeps when you power on the computer?

If it's flat out not powering up (no lights, no fans spinning, nothing) then your powersupply is bad. It doesn't even have to be connected to your motherboard to be working. It just needs power from the wall electrical outlet.

Answer 5

It could be a faulty power supply or motherboard. If you have another desktop that you could test the PSU on, try that first.

If the PSU checks out, take the motherboard out of the case and bench test it. If it works, then possibly a brass standoff could have been shoritng out the board.

If the system doesn't work by being bench tested, the motherboard is faulty.

Good luck

Answer 6

i know this may sound funny but there could be a couple of "dee dee dee" moments that can happen while building a pc:
- Check if power supply is on, ( mine has a switch in the back to turn on and off)
- Check if power supply is connected. to the right places
- Power switch cord may be plugged into the wrong pin.
- PSU might be dead

people have told me if you're having problems with your build you just want to try it with the CPU, RAM and Mobo plugged in and see if you can get into the BIOS. but since yours isn't turning on completely, could be a PSU problem. unless you dont have a PSU =P

Answer 7

if it's not doing anything at all I would suspect the power supply. You have another one you could swap out temporarily to test it.
Is the voltage selector on the power supply correct?

Did the MB have 2 power connectors and if so did you connect them both, correctly?