computer not starting.

[godofwar193]

Okay so i just finished building my first build,
i7-2600k
p67a-ud3
corsair vengence
samsung f3
haf 922
gtx570
corsair hx850w

so i did all the cables and everything and tried to turn it on, but nothing happened except a small light came on and went off on the motherboard. I unplugged everything and tried the little psu test and the fan twiched, not sure if the psu is working or what but it twiched, and i feel like its working, not sure what the problem is. Gonna take it to microcenter tommorow or something and see what they say. But any suggestions other than that?

 

[mnewsham]

Check the CPU power cable, make sure there are no standoff's touching the motherboard in the wrong place. That PSU is too big o_e...

 

[godofwar193]

lol. just saving up power

 

[mnewsham]

lol. just saving up power

You are wasting power probably with that PSU, you arent running it at 50-60% efficiency (when it is most efficient) so it will use MORE power then say a 500w PSU would.

 

[mfenn]

You are wasting power probably with that PSU, you arent running it at 50-60% efficiency (when it is most efficient) so it will use MORE power then say a 500w PSU would.

:thumbsup:

OP, also check to make sure that you've plugged in the ATX12V and PCIe power connectors.

 

[Zap]

any suggestions other than that?

Try testing it outside of the case. Put the motherboard on top of the box it came in. Double check that the CPU, heatsink/fan, RAM are properly installed. Install graphics card. Hook up power supply (24-pin to motherboard, 8-pin to motherboard, two 6-pin to graphics card, switch turned on). Then, try to power up the motherboard by momentarily (touch and go) contacting the two power switch pins with a screwdriver.

You are wasting power probably with that PSU, you arent running it at 50-60% efficiency (when it is most efficient) so it will use MORE power then say a 500w PSU would.

You are correct in saying that the PSU will be less efficient, but it isn't that bad. During non-gaming the system might be running under 100W if power management is enabled, but the PSU should still be around 70-80% efficient at those low levels while a decent 500W PSU would likely still be 80%+.