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PC Won't Turn On

post #1 of 8
Thread Starter 
I used it in the morning on the weekend, no problems whatsoever. In fact, I haven't had problems with this PC since I built it in November. I shut it down in the morning as usual and went out for the day.

Later that night when I got home, I pressed the power button on my PC and nothing happened. Fans did not turn, LED did not light up, there was no response whatsoever. It just didn't turn on.

I've checked that everything was plugged in. All connections were good, of course since everything was unchanged from went it last worked. Next I checked the outlet in the wall, measured voltage at 120.1V. Looks good. I moved the PC across the house to try another outlet just in case, and also switched the power cable. Still no response.

In such an unusual case like this, I suspect it could only be one of three things: 1) PSU 2) Case 3) Motherboard

My motherboard does not have a power button. I am limited with tools to diagnose this problem. I do not have a multimeter. I do however, have an old Pentium 4 system that hasn't run in years. Probably has some stock 250w - 350w PSU and small case. Specs are in sig (Black 2012).
Edited by SkillzKillz - 7/5/13 at 8:59am
Black 2012
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Black 2012
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500k Stock Asrock Z77 Extreme3 Motherboard XFX AMD Radeon HD 6850 16GB (4x4gb) G. Skill Sniper 1333mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4  Western Digital Caviar Black Western Digital Elements Seagate Barracuda 6GB/s 
Optical DriveCoolingOSKeyboard
LG Lightscribe 22x DVD RW R+ R- Noctua NH-D14 Windows 7 Professional x64 Logitech G11 
PowerCaseMouseMouse Pad
Seasonic 750w Gold Fractal Design R4 (Windowed) Logitech G5 Ratpadz GS 
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post #2 of 8
meter out your psu and if it is goo jump your mobo on pins
Ol' No Name
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Ol' No Name
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liteon iHOS 104-06 liteon DVD drive (not sure) Ek Supremacy, swiftech mcr420, swiftech ,mcr220 Windows 7 Pro 64 SP1 
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by stringcheese166 View Post

meter out your psu and if it is goo jump your mobo on pins
Is there a way to start a motherboard without a power button?
Black 2012
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500k Stock Asrock Z77 Extreme3 Motherboard XFX AMD Radeon HD 6850 16GB (4x4gb) G. Skill Sniper 1333mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4  Western Digital Caviar Black Western Digital Elements Seagate Barracuda 6GB/s 
Optical DriveCoolingOSKeyboard
LG Lightscribe 22x DVD RW R+ R- Noctua NH-D14 Windows 7 Professional x64 Logitech G11 
PowerCaseMouseMouse Pad
Seasonic 750w Gold Fractal Design R4 (Windowed) Logitech G5 Ratpadz GS 
AudioAudio
Bose Companion 2 Sennheiser HD280 Pro 
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Black 2012
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500k Stock Asrock Z77 Extreme3 Motherboard XFX AMD Radeon HD 6850 16GB (4x4gb) G. Skill Sniper 1333mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4  Western Digital Caviar Black Western Digital Elements Seagate Barracuda 6GB/s 
Optical DriveCoolingOSKeyboard
LG Lightscribe 22x DVD RW R+ R- Noctua NH-D14 Windows 7 Professional x64 Logitech G11 
PowerCaseMouseMouse Pad
Seasonic 750w Gold Fractal Design R4 (Windowed) Logitech G5 Ratpadz GS 
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Bose Companion 2 Sennheiser HD280 Pro 
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post #4 of 8
Quote:
Originally Posted by SkillzKillz View Post

Is there a way to start a motherboard without a power button?

Yes, look for the header on the motherboard that connects the front panel case wires.

There will be two posts for the power switch. Most of the time they are marked above and/or below the pins in the header. May say something like;

PS + / PS - etc.

Best bet is to find a copy of the motherboard manual and look at the page that details the front panel connectors. It will show you exactly which two pins have to be shorted to one another in order to jump start the motherboard.

If you don't have a power supply tester, you can at least jump start the power supply to see if it turns on. To do this;

1. Make sure the power supply is unplugged from the wall socket
2. Connect a fan to one of the molex plugs on the power supply
3. Fashion a wire or a paper clip to jump the green wire and one of the black wires (ground wires) on the 24 pin ATX connector.
4. Use the wire or paper clip to jump between the green wire and one of the ground wires on the 24 pin ATX connector.

I've attached a picture illustrating the procedure

ScreenHunter_01 Jul. 05 12.17.jpg 29k .jpg file

wevs rig
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i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
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Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
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wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
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post #5 of 8
wonder if the power switch on the back of the psu got fliped?
post #6 of 8
Quote:
Originally Posted by banging34hzs View Post

wonder if the power switch on the back of the psu got fliped?

Good point, sometimes we overlook the simplest of solutions smile.gif
wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
MouseMouse PadAudio
Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
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wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
MouseMouse PadAudio
Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
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post #7 of 8
Thread Starter 
I've determined the problem is with the PSU, since I have used my older PC to test all the components. The new PC boots just fine with the old PSU. The old PC does NOT boot with the new PSU. This verifies that the new PSU is dead.

I have also used the paperclip trick to jump the PSU. It does not work with the new PSU, but does with the old. Once again confirming the PSU is dead. Thank you Wevvspot.

Seasonic provides a guide on jump starting the PSU with a paper clip, lol

http://www.seasonicusa.com/RMABeta/JumpStart/JS.pdf
Quote:
Originally Posted by banging34hzs View Post

wonder if the power switch on the back of the psu got fliped?
This was actually one of the first things I checked. The power switch was not touched. It remained in the "I" position and still did not work.

While troubleshooting I have tried flipping it in 5 minute intervals to test, but this did nothing.
Edited by SkillzKillz - 7/5/13 at 11:34am
Black 2012
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500k Stock Asrock Z77 Extreme3 Motherboard XFX AMD Radeon HD 6850 16GB (4x4gb) G. Skill Sniper 1333mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4  Western Digital Caviar Black Western Digital Elements Seagate Barracuda 6GB/s 
Optical DriveCoolingOSKeyboard
LG Lightscribe 22x DVD RW R+ R- Noctua NH-D14 Windows 7 Professional x64 Logitech G11 
PowerCaseMouseMouse Pad
Seasonic 750w Gold Fractal Design R4 (Windowed) Logitech G5 Ratpadz GS 
AudioAudio
Bose Companion 2 Sennheiser HD280 Pro 
  hide details  
Reply
Black 2012
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500k Stock Asrock Z77 Extreme3 Motherboard XFX AMD Radeon HD 6850 16GB (4x4gb) G. Skill Sniper 1333mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4  Western Digital Caviar Black Western Digital Elements Seagate Barracuda 6GB/s 
Optical DriveCoolingOSKeyboard
LG Lightscribe 22x DVD RW R+ R- Noctua NH-D14 Windows 7 Professional x64 Logitech G11 
PowerCaseMouseMouse Pad
Seasonic 750w Gold Fractal Design R4 (Windowed) Logitech G5 Ratpadz GS 
AudioAudio
Bose Companion 2 Sennheiser HD280 Pro 
  hide details  
Reply
post #8 of 8
Glad that you isolated the failure mode. Is your faulty power supply still under warranty?
wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
MouseMouse PadAudio
Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
  hide details  
Reply
wevs rig
(19 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K Gigabyte GA-Z77X-UD5H MSI GTX 670 PE OC x2 SLi Team xTreem 16Gb (2x4Gb) DDR3 2400Mhz 
Hard DriveHard DriveHard DriveHard Drive
Crucial C300 128Gb x2 RAID0  SK Hynix SH910 128Gb x2 RAID0 Western Digital Black Edition 1Tb Western Digital Black Edition 640Gb 
Optical DriveOptical DriveCoolingOS
Asus DVD / Bluray LG Bluray / Burner Custom H20 - Swiftech, XSPC Windows 7 Pro x64 
MonitorKeyboardPowerCase
Acer P243Waid Razer Black Widow Ultimate Corsair HX1000 Corsair C70 White Edition 
MouseMouse PadAudio
Razer DeathAdder SteelSeries Creative Soundblaster X-FI Titanium HD 
  hide details  
Reply
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