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Whenever I plug in the power cable to the wall, the PC automatically turns on but can't turn off unless you hold the button, but whenever you let go of the power button, the PC just turns back on. It doesn't boot to a BIOS when it turns on automatically either. The monitor just says 'Going to sleep'. Please help.

 

Edit: there is no manual off switch thing on the PSU.

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specs

 

"My opinion is that your opinion is wrong." - AlwaysFSX    CPU I5 4690k MB MSI Gaming 5 RAM 2 x 4GB HyperX Blu DDR3 GPU Asus GTX970 Strix,  Case Corsair 760T Storage 1 x 120GB 840EVO 1 x 1TB WD Blue, 1 x 500GB Toshiba  

 The cave/beast v2 (OLD) http://imgur.com/a/8AmeH                                  PSU 600W Raidmax RX600AF Displays ASUS VS278Q-P x2, BenQ Xl2720z Cooling Dark Rock 3, 4 AP120s Keyboard Logitech G710+ Mouse Razer Deathadder 

 

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then try replacing the switch.

 

Spoiler

CPU:Intel Xeon X5660 @ 4.2 GHz RAM:6x2 GB 1600MHz DDR3 MB:Asus P6T Deluxe GPU:Asus GTX 660 TI OC Cooler:Akasa Nero 3


SSD:OCZ Vertex 3 120 GB HDD:2x640 GB WD Black Fans:2xCorsair AF 120 PSU:Seasonic 450 W 80+ Case:Thermaltake Xaser VI MX OS:Windows 10
Speakers:Altec Lansing MX5021 Keyboard:Razer Blackwidow 2013 Mouse:Logitech MX Master Monitor:Dell U2412M Headphones: Logitech G430

Big thanks to Damikiller37 for making me an awesome Intel 4004 out of trixels!

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It's an old motherboard with a Pentium 4 on it. Also, the PSU is an off brand that came w/ the case. But the PSU isn't the problem.

check in the bios settings if the system is enabled to restart when power is lost

 

"My opinion is that your opinion is wrong." - AlwaysFSX    CPU I5 4690k MB MSI Gaming 5 RAM 2 x 4GB HyperX Blu DDR3 GPU Asus GTX970 Strix,  Case Corsair 760T Storage 1 x 120GB 840EVO 1 x 1TB WD Blue, 1 x 500GB Toshiba  

 The cave/beast v2 (OLD) http://imgur.com/a/8AmeH                                  PSU 600W Raidmax RX600AF Displays ASUS VS278Q-P x2, BenQ Xl2720z Cooling Dark Rock 3, 4 AP120s Keyboard Logitech G710+ Mouse Razer Deathadder 

 

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