Computer will not reboot after being shut down

McSteel · Jan 5, 2015

Irony said:
Edit: I opened up the PSU to see if there was anything obviously wrong, and the wire that goes to pin 20 on the 24 pin connector is not connected to anything inside; iI looked up a pinout and it's supposed to be -5v. I can't find where it use to connect inside tho...how strange.

Actually, that is completely normal. The -5V rail was used up until ATX1.2 spec, where it was made recommended but not required. Subsequently, it was made obsolete (but not forbidden) in ATX1.3, and it was completely cast out in ATX2.0. Your PSU is ATX2.3 and EPS2.91 compliant, so it naturally doesn't have the -5V rail.

That rail was used for old ISA expansion cards, so there's not much use for it today.

Mussels · Jan 5, 2015

Irony said:
@Henkenator68NL It's got a debug led, it wasn't much help tho, it didn't throw any codes.

Well I found the problem. I swapped out the PSU and it's working perfect. Sad day. I also think I found what may have caused it to fail. I had been noticing my case was shocking me so I checked with my meter and it was at 60v AC, which shouldn't be possible. So I checked the ground in the outlet and it read like 80v AC, which is super weird. Idk why it's like that but I just decided to plug the computer into an outlet on the other side of the room that read like it's supposed to. and the case doesn't shock me anymore, lol. I'm wondering if maybe it was straining the PSU or something and wore out a cap, idk. Regardless, now I know what the problem is. No warranty on the PSU tho, got it cheap from a reviewer and then I custom sleeved it; i've had it a year and a half maybe. I guess I'm in the market for a decent PSU now, i'm afraid to game or fold on 600 watts haha.

Thanks guys for all your input

sure it was the PSU and not the socket then?

Also check for ANYTHING with external power like HDMI, USB etc - see if one of those was feeding juice back (i've had a powered USB hub feed enough power back in to light up mobo LED's, despite the PSU being unplugged)

Irony · Jan 5, 2015

Oh OK @Henkenator68NL

@Mussels there's nothing else plugged into the computer except dvi to the graphics card and a usb dongle for mouse and keyboard. And everything is working perfect now with the other PSU; it must be something like the false positive short protection henkenator mentioned

Mussels · Jan 6, 2015

Irony said:
Oh OK @Henkenator68NL

@Mussels there's nothing else plugged into the computer except dvi to the graphics card and a usb dongle for mouse and keyboard. And everything is working perfect now with the other PSU; it must be something like the false positive short protection henkenator mentioned

Plug everything back in while monitoring the voltage on the case, back in the original port to be sure.

Irony · Jan 6, 2015

I tried it and now the PSU wont start it no matter how much I clear CMOS button and try to start it

rtwjunkie · Jan 6, 2015

So, to be clear, it all started OUTside the case, but back INside the case it won't start? If that's the situation, then it is likely a short between back of motherboard and case. Unless I am not following this correctly...

Nullifier · Jan 6, 2015

rtwjunkie said:
So, to be clear, it all started OUTside the case, but back INside the case it won't start? If that's the situation, then it is likely a short between back of motherboard and case. Unless I am not following this correctly...

From what I've understood, the PC is working perfectly normal with the PSU he swapped in.

It's the original PSU thats now not working at all with the setup.

Irony · Jan 6, 2015

Xorium is right. Sorry I wasn't terribly specific; originally the problem was with the old 1000w PSU in it. Swapping the 600w in fixed it. I tried again to be sure with the 1000w outside the case and it wouldn't start at all.

rtwjunkie · Jan 6, 2015

Ok, thanks to both of you for clearing that up!! Now I am following the process clearly again.

System Name	Chaos
Processor	Intel Core i5 4590K @ 4.0 GHz
Motherboard	MSI Z97 MPower MAX AC
Cooling	Arctic Cooling Freezer i30 + MX4
Memory	4x4 GB Kingston HyperX Beast 2400 GT/s CL11
Video Card(s)	Palit GTX 1070 Dual @ stock
Storage	256GB Samsung 840 Pro SSD + 1 TB WD Green (Idle timer off) + 320 GB WD Blue
Display(s)	Dell U2515H
Case	Fractal Design Define R3
Audio Device(s)	Onboard
Power Supply	Corsair HX750 Platinum
Mouse	CM Storm Recon
Keyboard	CM Storm Quickfire Pro (MX Red)

System Name	Rainbow Sparkles (Power efficient, <350W gaming load)
Processor	Ryzen R7 5800x3D (Undervolted, 4.45GHz all core)
Motherboard	Asus x570-F (BIOS Modded)
Cooling	Alphacool Apex UV - Alphacool Eisblock XPX Aurora + EK Quantum ARGB 3090 w/ active backplate
Memory	2x32GB DDR4 3600 Corsair Vengeance RGB @3866 C18-22-22-22-42 TRFC704 (1.4V Hynix MJR - SoC 1.15V)
Video Card(s)	Galax RTX 3090 SG 24GB: Underclocked to 1700Mhz 0.750v (375W down to 250W))
Storage	2TB WD SN850 NVME + 1TB Sasmsung 970 Pro NVME + 1TB Intel 6000P NVME USB 3.2
Display(s)	Phillips 32 32M1N5800A (4k144), LG 32" (4K60) \| Gigabyte G32QC (2k165) \| Phillips 328m6fjrmb (2K144)
Case	Fractal Design R6
Audio Device(s)	Logitech G560 \| Corsair Void pro RGB \|Blue Yeti mic
Power Supply	Fractal Ion+ 2 860W (Platinum) (This thing is God-tier. Silent and TINY)
Mouse	Logitech G Pro wireless + Steelseries Prisma XL
Keyboard	Razer Huntsman TE ( Sexy white keycaps)
VR HMD	Oculus Rift S + Quest 2
Software	Windows 11 pro x64 (Yes, it's genuinely a good OS) OpenRGB - ditch the branded bloatware!
Benchmark Scores	Nyooom.

System Name	Torquey Vulture
Processor	Ryzen 5 2600
Motherboard	Gigabyte B450 MiniITX
Cooling	DDC water loop, EK block
Memory	16GB Patriot Viper RGB
Video Card(s)	EVGA 1070
Storage	500gb NVME; some Phat HDDs
Display(s)	Achieva Shimian 27" 2560x1440
Case	Thermaltake V1 MiniITX
Power Supply	EVGA supernova 850 G2
Mouse	Corsair Harpoon
Keyboard	Possibly the cheapest you can buy. Shift key broke recently. Space sounds like I'm kicking a ham
Software	Windows 10

System Name	Rainbow Sparkles (Power efficient, <350W gaming load)
Processor	Ryzen R7 5800x3D (Undervolted, 4.45GHz all core)
Motherboard	Asus x570-F (BIOS Modded)
Cooling	Alphacool Apex UV - Alphacool Eisblock XPX Aurora + EK Quantum ARGB 3090 w/ active backplate
Memory	2x32GB DDR4 3600 Corsair Vengeance RGB @3866 C18-22-22-22-42 TRFC704 (1.4V Hynix MJR - SoC 1.15V)
Video Card(s)	Galax RTX 3090 SG 24GB: Underclocked to 1700Mhz 0.750v (375W down to 250W))
Storage	2TB WD SN850 NVME + 1TB Sasmsung 970 Pro NVME + 1TB Intel 6000P NVME USB 3.2
Display(s)	Phillips 32 32M1N5800A (4k144), LG 32" (4K60) \| Gigabyte G32QC (2k165) \| Phillips 328m6fjrmb (2K144)
Case	Fractal Design R6
Audio Device(s)	Logitech G560 \| Corsair Void pro RGB \|Blue Yeti mic
Power Supply	Fractal Ion+ 2 860W (Platinum) (This thing is God-tier. Silent and TINY)
Mouse	Logitech G Pro wireless + Steelseries Prisma XL
Keyboard	Razer Huntsman TE ( Sexy white keycaps)
VR HMD	Oculus Rift S + Quest 2
Software	Windows 11 pro x64 (Yes, it's genuinely a good OS) OpenRGB - ditch the branded bloatware!
Benchmark Scores	Nyooom.

System Name	Torquey Vulture
Processor	Ryzen 5 2600
Motherboard	Gigabyte B450 MiniITX
Cooling	DDC water loop, EK block
Memory	16GB Patriot Viper RGB
Video Card(s)	EVGA 1070
Storage	500gb NVME; some Phat HDDs
Display(s)	Achieva Shimian 27" 2560x1440
Case	Thermaltake V1 MiniITX
Power Supply	EVGA supernova 850 G2
Mouse	Corsair Harpoon
Keyboard	Possibly the cheapest you can buy. Shift key broke recently. Space sounds like I'm kicking a ham
Software	Windows 10

Computer will not reboot after being shut down

McSteel

Mussels

Freshwater Moderator

Irony

Mussels

Freshwater Moderator

Irony

rtwjunkie

PC Gaming Enthusiast

Nullifier

Irony

rtwjunkie

PC Gaming Enthusiast

System Name	Bayou Phantom
Processor	Core i7-8700k 4.4Ghz @ 1.18v
Motherboard	ASRock Z390 Phantom Gaming 6
Cooling	All air: 2x140mm Fractal exhaust; 3x 140mm Cougar Intake; Enermax T40F Black CPU cooler
Memory	2x 16GB Mushkin Redline DDR-4 3200
Video Card(s)	EVGA RTX 2080 Ti Xc
Storage	1x 500 MX500 SSD; 2x 6TB WD Black; 1x 4TB WD Black; 1x400GB VelRptr; 1x 4TB WD Blue storage (eSATA)
Display(s)	HP 27q 27" IPS @ 2560 x 1440
Case	Fractal Design Define R4 Black w/Titanium front -windowed
Audio Device(s)	Soundblaster Z
Power Supply	Seasonic X-850
Mouse	Coolermaster Sentinel III (large palm grip!)
Keyboard	Logitech G610 Orion mechanical (Cherry Brown switches)
Software	Windows 10 Pro 64-bit (Start10 & Fences 3.0 installed)

System Name	X58 XEON
Processor	Intel Xeon X5660
Motherboard	Asus Rampage III
Cooling	H80i
Memory	12gb Corsair Dominators
Video Card(s)	GIgabyte GTX 970 G1 Gaming SLI
Storage	Crucial Mx100 SSD
Display(s)	Samsung UE40H6900 UHD 40" 4:4:4 60hz
Case	Strike one advance
Audio Device(s)	M-audio M Track MKII
Power Supply	EVGA supernova G2 850watt
Software	windows 8.1 64bit