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  PCwont even try to power on 
 
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Scott Grove Oct 09, 2015, 03:46pm EDT Reply - Quote - Report Abuse
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alright i just got done putting my new PC together its a

FX 9590
Asus Crosshair V formula Z
EVGA 1000W g1
16GB gskill 2400

and when i press power button on MOBO AND case absolutlely nothing happens isnt my power outlet as i unplugged it to plug in my old PC to try and figure something out i checked my plugs on mobo none are loose and i was hopping someone might have an idea as only thing i can think of is DOA PSU cause it dont even try and do anything cause nothing happens at all


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kOrny Oct 10, 2015, 02:21am EDT Reply - Quote - Report Abuse
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>> Re: PCwont even try to power on
Make sure that the power button connector is connected to the right pins on the motherboard.

Test the power supply in the other PC to rule it out. Try a different power cable. Make sure all power cables are connected to the motherboard (24pin + 4-8pin).

john albrich Oct 12, 2015, 06:30am EDT Reply - Quote - Report Abuse
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Edited: Oct 12, 2015, 06:35am EDT

 
>> Re: PCwont even try to power on
.
A not unusual problem with initial builds is an electrical short between the motherboard and the case. This can be from the motherboard/case standoffs, or case structural edges impinging at unexpected points on the motherboard (or other parts), or a sharp case edge cutting into or through a wire, etc. This can happen with cheap or very expensive cases.

An improperly installed CPU or "bad" CPU can also result in a failure to power-up. However, given the pain involved in removing and reinstalling a CPU (and probably needing more thermal bonding material) that's not the first thing I prefer to try to change.

I always build my computer with the absolute minimum of parts and try to power-up and ensure the fan starts to run...then I start adding the rest of the components one at a time, verifying the system either powers-up or boots-up depending on how many and which parts I've installed.
(however, I also us a "go/no-go" PSU tester before even installing the PSU just to check for major DOA problems in the PSU. These cost about US$15 and can save a lot of time and prevent headaches during builds with new PSUs. Also if the PSU has been delivered and one is still waiting on added parts like RAM or something, early "go/no-go" testing of the PSU may save one time/money by allowing one to exchange/refund/RMA a bad PSU within a 30 day exchange/refund period (like one gets from newegg).

For example, I'll install the PSU and the motherboard (no RAM, no graphics card, etc) and verify the fan at least starts to spin. Then disconnect AC mains (not just power-off the case front switch) and install RAM, Video, HDD/SSD, etc and any other components needed to boot-up the computer to BIOS, and then check BIOS values (voltages, timings, etc).


Also, be sure to follow proper ESD and AC mains power protocols when touching the internals of a computer. For example, and ESD wrist-strap is advised at the MINIMUM, and the AC mains cord should be disconnected.

Note: with modern PSUs, there is still some power applied to the motherboard even when the computer front-panel power switch is "off". Only disconnecting the AC mains cord or switching-off the PSU's rear power-switch (if it has one) actually removes all PSU power from the motherboard. Parts install/removal or "adjustment" made while the motherboard still has power can result in catastrophic damage to parts and/or the motherboard.


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