Help! After I shut PC down, it doesn't get power to start up again until unplug it

[aseir]

It runs GREAT while it's actually on. When I shut my PC down most of the time, my PC wont turn on unless I unplug it from power for hours most of the time. Also when I put it to sleep, the light flashes on the tower that it's asleep and sometimes it will just stop flashing and it loses power or sometimes I will press a key to have it come back on and the flashing light stops flashing and it dies like it doesn't have enough power to start. I RMA'd my PSU and it seemed to work fine for a few days but now it's back to the same fuckery. Could I have gotten another bad PSU? Why would it work fine for a few days? I updated bios, reset the cmos battery, checked all jumpers, checked all power settings in BIOS, reset BIOS, checked all settings in windows, reseated all components except CPU, ensured all wires were secure. Looked for shorts and wiggled all kinds of cables around while trying to start it. Looked for anything wrong everywhere. I'm beat. WHAT THE FUCK. PC runs great while it's on. Also, sometimes when I press the power button, I can see the lights dim real quick like it's pulling power but it wont turn on. I've tried several outlets throughout the house
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($189.99 @ Micro Center)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($19.99 @ Newegg)
Motherboard: Asus Z97-AR ATX LGA1150 Motherboard ($109.99)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1866 Memory ($29.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($77.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.98 @ OutletPC)
Video Card: PowerColor Radeon R9 290X 4GB PCS+ Video Card
Case: Fractal Design Define R4 w/Window (Black Pearl) ATX Mid Tower Case ($112.99 @ SuperBiiz)
Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($115.98 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($18.88 @ OutletPC)
Operating System: Microsoft Windows 8.1 OEM (64-bit) ($89.95 @ OutletPC)
Keyboard: Razer BlackWidow Chroma Wired Gaming Keyboard ($149.99 @ Amazon)
Total: $965.72
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-02 21:27 EST-0500

 

[LTC8K6]

Have you tried removing the video card to see if the problem goes away?

 

[aseir]

Have you tried removing the video card to see if the problem goes away?

Yes. Still didnt boot. Perhaps the capacitors are bad on the motherboard? None of them look blown or weird. Or perhaps I got another bad PSU. Seriously this is driving me nuts, I've spent so much time trying to fix it.

 

[C1]

With the ATX connector in place, will the system start if you jumper the ATX green wire?

A possibility is to buy a new PSU at Fry's to see if that resolves the issue. If not, then return the PSU for refund.

Otherwise, take the complete system to a competent computer repair shop for diagnosis. Their analysis report will support your request for a refund or exchange of either the PSU or MB (if that what it turns out to be, but you might be surprised if they find something unexpected like a flakey/bad memory module).

 

[aseir]

With the ATX connector in place, will the system start if you jumper the ATX green wire?

A possibility is to buy a new PSU at Fry's to see if that resolves the issue. If not, then return the PSU for refund.

Otherwise, take the complete system to a competent computer repair shop for diagnosis. Their analysis report will support your request for a refund or exchange of either the PSU or MB (if that what it turns out to be, but you might be surprised if they find something unexpected like a flakey/bad memory module).

Yeah, money is tight so I really dont want to go buy a PSU for something Im not entirely sure of. It does make me wonder why the new RMA'd PSU worked seemingly fine for a few days but now it's back to its same old tricks.

 

[adamantine.me]

You should be able to diagnose it yourself. The strangest part is that a new PSU fixed the issue, but now you're back to square 1.

It's a pain but try running it without the GPU as well as RAM. If no luck, then go over the mobo connections.

Sounds like the motherboard though, not sure if it's always possible to tell by sight.

 

[aseir]

You should be able to diagnose it yourself. The strangest part is that a new PSU fixed the issue, but now you're back to square 1.

It's a pain but try running it without the GPU as well as RAM. If no luck, then go over the mobo connections.

Sounds like the motherboard though, not sure if it's always possible to tell by sight.

Took out RAM and Vid card and still no boot. Tried the paperclip test again on the PSU and it failed to start up. Im guessing I got a bad PSU again Christ.

 

[VirtualLarry]

Tried the paperclip test again on the PSU and it failed to start up. Im guessing I got a bad PSU again.

I would say, if you get yet another PSU, and it works, for a few days, then "dies"... then something in your environment, or in your PC, is killing PSUs.

 

[LTC8K6]

Make sure the back side of the mobo is not touching the case intermittently?