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Computer wont power on :(

Alphy13
By Alphy13
in Troubleshooting
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My computer wont power on. Any troubleshooting tips? How can I check the motherboard or CPU without a replacement?

 

I left my computer with a game paused and when I came back it was stuck continually trying to power on. It spins through a bunch of boot codes that are not specified on my MB manual for about 5 seconds and then the power cuts out. Never even gets to the BIOS screen. 

 

I tried unplugging EVERYTHING: GPU, USB (internal and external), all of my dives, displays, front panel; no change.

 

I hooked the power supply up to a volt-meter and found a stable 12V and 5V on each rail while the computer did its attempted boot. If I unplug the MB power connector, and short the "on" pin, it stays on with the same voltages as long as the appropriate pin is shorted. This is still true with or without my other devices plugged in drawing power. 

 

I'm not sure how I can test my motherboard or CPU without buying a replacement, not knowing which is the issue. Please help!!!

 

i5 6600K, GA-Z170X-Gaming 7, HyperX FURY Black (2x8GB), EVGA 970 4GB SSC Gaming, EVGA 220-P2-0650-X1 SuperNOVA 650 P2, Samsung 850 EVO 250GB 2.5-Inch SATA III Internal SSD  (I normally have an additional set of RAM, a Blueray drive, and an assortment of HDD and NVMe, but I disconnected it all for troubleshooting.)

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Try removing just the GPU and plugging your monitor into the motherboard for the integrated graphics on the CPU. That way you might find out that the computer works but just the GPU is dead or something

SPEC LIST:

  • CPU: AMD Ryzen 9 5950X w/ NZXT Kraken Z73 360mm Liquid Cooler
  • GPU: NVIDIA RTX 3090 FE
  • RAM: Corsair Vengeance LPX 32GB (4 x 8GB) 5000MHz CL18
  • Motherboard: MSI MEG X570 Godlike
  • SSD: Samsung 980 Pro PCIe 4.0 1TB (x3)
  • PSU: Corsair AX1600i
  • Case: NZXT H710
  • Monitor: Alienware AW2521H 25inch 360Hz 1ms
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That happened to me a few times on the old pc too. What worked for me was unplugging the pc then holding the power button for a minute then turning turning it on. Idk if this will work for you though.

Im with the mentaility of "IF IM NOT SURE IF ITS ENOUGH COOLING, GO OVERKILL"

 

CURRENT PC SPECS    

CPU             : Ryzen 5 3600 (Formerly Ryzen 3 1200)

GPU             : ASUS RX 580 Dual OC (Formerly ASUS GTX 1060 but it got corroded for some odd reasons)

GPU COOOER      : ID Cooling Frostflow 120 VGA (Stock cooler overheats even when undervolted :()

MOBO            : MSI B350m Bazooka

MEMORY          : Team Group Elite TUF DDR4 3600 Mhz CL 16
STORAGE         : Seagate Baracudda 1TB and Kingston SSD
PSU             : Thermaltake Lite power 550W (Gonna change soon as i dont trust this)
CASE            : Rakk Anyag Frost
CPU COOLER      : ID-Cooling SE 207
CASE FANS       : Mix of ID cooling fans, Corsair fans and Rakk Ounos (planned change to ID Cooling)
DISPLAY         : SpectrePro XTNS24 144hz Curved VA panel
MOUSE           : Logitech G603 Lightspeed
KEYBOARD        : Rakk Lam Ang

HEADSET         : Plantronics RIG 500HD

Kingston Hyper X Stinger

 

and a whole lot of LED everywhere(behind the monitor, behind the desk, behind the shelf of the PC mount and inside the case)

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  • Author

Update: 

I took the whole thing apart. Once it was out on the table, it booted up just fine. I put it all back together one piece at a time making sure it would still boot at each step. Finally, the whole thing worked with no issues.

 

A couple days later, it went back to its strange almost boot loop, so I tried shorting the PS_ON pin but this didn't change anything. 

 

Should I replace the Motherboard, the CPU, or both and just go with Current Gen?

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