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Mobo or PSU dead?

post #1 of 4
Thread Starter 
The two parts on trial here are: EVGA 750i FTW and Corsair TX750W

I'm having trouble with my PC powering on at all. The PC was on, and I plugged the HD Audio cable into the slightly wrong pinset. When I did this, the PC turned off (no popping noises, no smoke or burning smells).

I pulled the audio cable out, turned off the PSU for a few moments, and turned the PC back on. I saw the fans spin, so I thought everything was fine and turned the PC off again for the time being. I then plugged the HD Audio cables into the proper pin set, and turned the PSU on. This time nothing happened.

Since I'm at work right now and can't type up an essay, I'll make a quick summary of what's happening with my PC right now:

- No fans spinning
- One blue light on the mobo working (top right for the 750i owners)
- No other lights on the mobo working
- Tried to clear CMOS with manual button and that didn't help (haven't tried taking out the battery yet)
- USB ports receive power
- Power LED's work
- PC does not power on at all (no beeps, post, etcetera)
- Tried unplugging everything except HD's, CPU and RAM and did not work
- Attempted to short the Power button pins with a screw driver and no short occured


I have serious trouble believing that either part is actually fried (since I've done a lot worse to far less stable parts which all came out fine), but I'm out of idea's.

What else can be done to remedy the situation? Is it the Mobo or PSU?
Edited by ShadowOS - 6/26/08 at 2:39pm
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CPUMotherboardGraphicsRAM
Core i7 940 EVGA X58 FTW3 GTX 275 x2 SLI 12gigs G.SKILL 
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2x 1TB WD, 2x 640GB WD 7200rpm LG DVD-RW Windows 7 64 bit Syncmaster245T Primary, Syncmaster 245BW Secondary 
KeyboardPowerCaseMouse
MS Comfort Curve 2000 Corsair TX750W Coolmaster Razer Viper RZV-100 
Mouse Pad
Standard Black 
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L 2
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 940 EVGA X58 FTW3 GTX 275 x2 SLI 12gigs G.SKILL 
Hard DriveOptical DriveOSMonitor
2x 1TB WD, 2x 640GB WD 7200rpm LG DVD-RW Windows 7 64 bit Syncmaster245T Primary, Syncmaster 245BW Secondary 
KeyboardPowerCaseMouse
MS Comfort Curve 2000 Corsair TX750W Coolmaster Razer Viper RZV-100 
Mouse Pad
Standard Black 
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post #2 of 4
If I had to give an educated guess I would say you shorted something on the mobo. The easiest way to tell for sure would be to use a known working PSU in your system and see if it boots or not. Do you have one or do you know anyone who has a PSU you could borrow?
Edited by Iceman0803 - 6/26/08 at 3:13pm
Black Ice
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Crucial M4 SATA 6GB/s SSD (CT128M4SSD2) OCZ Vertex 3 6GB/s SSD (VTX3-25SAT3-120G) Samsung Blu-Ray Combo Internal 12XReadable and ... Cooler Master Hyper 212 Plus (RR-B10-212P-G1) 
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Black Ice
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Gigabyte GA-Z68XP-UD3 EVGA GTX 560 Ti Superclocked (01G-P3-1563-AR) G-SKILL Ripjaws X Series F3-12800CL7-4GBXH (x2) 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 SATA 6GB/s SSD (CT128M4SSD2) OCZ Vertex 3 6GB/s SSD (VTX3-25SAT3-120G) Samsung Blu-Ray Combo Internal 12XReadable and ... Cooler Master Hyper 212 Plus (RR-B10-212P-G1) 
OSMonitorKeyboardPower
Windows 7 Professional x64 Samsung SyncMaster 2494HM (24" @1920x1080) Deck Legend Frost (105 key tactile) Corsair HX850 (CMPSU-850HX) 
CaseMouseMouse PadMouse Pad
Corsair Carbide Series 500R (CC-9011012-WW) Logitech G500 Gaming Mouse Steelseries 4HD Steelseries 63005SS QcK mini Mouse Pad 
Audio
ASUS Xonar D2 (PCI) 
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post #3 of 4
Thread Starter 
Of course! I can't believe I didn't think of that! =/

I have a 450w in another PC that I know to be working. So if the PC powers on with this PSU in, the other PSU is fried. If the mobo does not power on, it is the mobo that is fried, correct?
L 2
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 940 EVGA X58 FTW3 GTX 275 x2 SLI 12gigs G.SKILL 
Hard DriveOptical DriveOSMonitor
2x 1TB WD, 2x 640GB WD 7200rpm LG DVD-RW Windows 7 64 bit Syncmaster245T Primary, Syncmaster 245BW Secondary 
KeyboardPowerCaseMouse
MS Comfort Curve 2000 Corsair TX750W Coolmaster Razer Viper RZV-100 
Mouse Pad
Standard Black 
  hide details  
Reply
L 2
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 940 EVGA X58 FTW3 GTX 275 x2 SLI 12gigs G.SKILL 
Hard DriveOptical DriveOSMonitor
2x 1TB WD, 2x 640GB WD 7200rpm LG DVD-RW Windows 7 64 bit Syncmaster245T Primary, Syncmaster 245BW Secondary 
KeyboardPowerCaseMouse
MS Comfort Curve 2000 Corsair TX750W Coolmaster Razer Viper RZV-100 
Mouse Pad
Standard Black 
  hide details  
Reply
post #4 of 4
Quote:
Originally Posted by ShadowOS View Post
Of course! I can't believe I didn't think of that! =/

I have a 450w in another PC that I know to be working. So if the PC powers on with this PSU in, the other PSU is fried. If the mobo does not power on, it is the mobo that is fried, correct?
If the PC powers on like normal then yes it was your PSU that was bad. If not then either the backup PSU your using isn't powerful enough (should be fine though) or your board/BIOS is messed up.
Black Ice
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Gigabyte GA-Z68XP-UD3 EVGA GTX 560 Ti Superclocked (01G-P3-1563-AR) G-SKILL Ripjaws X Series F3-12800CL7-4GBXH (x2) 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 SATA 6GB/s SSD (CT128M4SSD2) OCZ Vertex 3 6GB/s SSD (VTX3-25SAT3-120G) Samsung Blu-Ray Combo Internal 12XReadable and ... Cooler Master Hyper 212 Plus (RR-B10-212P-G1) 
OSMonitorKeyboardPower
Windows 7 Professional x64 Samsung SyncMaster 2494HM (24" @1920x1080) Deck Legend Frost (105 key tactile) Corsair HX850 (CMPSU-850HX) 
CaseMouseMouse PadMouse Pad
Corsair Carbide Series 500R (CC-9011012-WW) Logitech G500 Gaming Mouse Steelseries 4HD Steelseries 63005SS QcK mini Mouse Pad 
Audio
ASUS Xonar D2 (PCI) 
  hide details  
Reply
Black Ice
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Gigabyte GA-Z68XP-UD3 EVGA GTX 560 Ti Superclocked (01G-P3-1563-AR) G-SKILL Ripjaws X Series F3-12800CL7-4GBXH (x2) 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 SATA 6GB/s SSD (CT128M4SSD2) OCZ Vertex 3 6GB/s SSD (VTX3-25SAT3-120G) Samsung Blu-Ray Combo Internal 12XReadable and ... Cooler Master Hyper 212 Plus (RR-B10-212P-G1) 
OSMonitorKeyboardPower
Windows 7 Professional x64 Samsung SyncMaster 2494HM (24" @1920x1080) Deck Legend Frost (105 key tactile) Corsair HX850 (CMPSU-850HX) 
CaseMouseMouse PadMouse Pad
Corsair Carbide Series 500R (CC-9011012-WW) Logitech G500 Gaming Mouse Steelseries 4HD Steelseries 63005SS QcK mini Mouse Pad 
Audio
ASUS Xonar D2 (PCI) 
  hide details  
Reply
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