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Dead mobo or faulty PSU?

post #1 of 19
Thread Starter 
SOLVED: was a bad PSU, feel free to read on tho, currently looking forward to reccomendations on a psu

Heya everyone

I've been having problems with my setup for the past few weeks.
I had a motherboard that simply wouldn't power on and exhibited the symptoms of a dead board. So I ordered a replacement and since I was looking to save money I purchased an open boxed board, It arrived and worked fine however the LAN and firewire Onboard would only work every blue moon. So I replaced that board as well with the GA-870a-UD3 motherboard. This is when the real troubled started as I could not get this board to post at all. Seeing as how I had yet to return the open boxed board I made sure to again test all my ram, CPU, graphics card and PSU which all tested fine. So I simply assumed that the gigabyte board was faulty and returned it for a replacement of the same model.

The replacement arrived exhibiting the same symptoms. It would power on but would not post nor show video, even removing the ram then CPU, then both would get me no error beeps etc.

I recently returned it and just received my asrock 890fx deluxe5 board and she's quite the beaut
However the same symptoms persist. Will power on, CPU fan and gpu fan power up, the hard drive can be heard revving up (I connected at least one) however there is no post, no beep, and no video output (I've two cards both which have been tested on the open boxed board from before)

I'm considering going out to purchase a new PSU. I'm not sure if that's the reason considering the open boxed board worked just fine, but this is my 4th board in 3 weeks and haven't tested otherwise. Does this sound like a familiar scenario that's been played out to some of you in the past?


I believe my system specs are still in my sig, with the exception of the motherboards. I'm currently using a 750w PSU
Edited by redoubt9000 - 5/13/11 at 2:40pm
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 AsRock 890FX Deluxe5 Radeon R9 290, Radeon HD 4850 12 GB DDR3 
Hard DrivePowerCaseAudio
OCZ Agility 3 Sunbeam 750w Xlcio WTBK Advanced Focusrite Saffire Pro 24 DSP 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 AsRock 890FX Deluxe5 Radeon R9 290, Radeon HD 4850 12 GB DDR3 
Hard DrivePowerCaseAudio
OCZ Agility 3 Sunbeam 750w Xlcio WTBK Advanced Focusrite Saffire Pro 24 DSP 
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post #2 of 19
Sounds like a bad CPU, but you say it's tested...so maybe you've got something shorting in the case, perhaps. Try having the entire system out of the case. To turn it on, you'll need to short the pins where the power switch connects to for a little while with something like a flathead screwdriver. If you don't feel comfortable doing that, then just connect the case's power button to the mobo and let her roll.
The Bedroom PC
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CPUMotherboardGraphicsRAM
Intel Core 2 Duo T9500 0KU184 Intel 965 2GB DDR2 
Hard DriveOptical DriveOSMonitor
Samsung 850 Pro 128GB TSSTCorp TS-L632D Windows 8.1 64-bit Dell 1440x900 built-in LCD 
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Mouse? What mouse? 
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The Bedroom PC
(13 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Duo T9500 0KU184 Intel 965 2GB DDR2 
Hard DriveOptical DriveOSMonitor
Samsung 850 Pro 128GB TSSTCorp TS-L632D Windows 8.1 64-bit Dell 1440x900 built-in LCD 
Mouse
Mouse? What mouse? 
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post #3 of 19
If you have another PSU sitting around or know someone you could borrow one from then I would suggest trying a different PSU. Bad PSU's can cause all kinds of problems and can even lead to frying other hardware.
Demonikware 2.0
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Intel Core i7-4770K ASUS MAXIMUS VI HERO EVGA GeForce GTX 670 G.SKILL Trident X Series 
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SAMSUNG 840 Series SSD SAMSUNG Spinpoint F3 HD103SJ Windows 8.1 Pro Samsung 2443BWT 24" LCD 
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Logitech G15v2 CORSAIR HX Series 620W Corsair Carbide Series White 500R Logitech G9 
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Demonikware 2.0
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Hard DriveHard DriveOSMonitor
SAMSUNG 840 Series SSD SAMSUNG Spinpoint F3 HD103SJ Windows 8.1 Pro Samsung 2443BWT 24" LCD 
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Logitech G15v2 CORSAIR HX Series 620W Corsair Carbide Series White 500R Logitech G9 
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post #4 of 19
Is all of this troubleshooting being done with the mobo outside of the case?

Also try a different outlet, or if you have ups try pulling directly from the wall.
Mighty-iTX
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One foot in..
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i7-4770K M7-Impact Strix GTX980 Samsung 
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Crucial M4 256 Glacer 240L W8.1 K272HUL 
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4770K/45/43 Maximus VI Extreme R290X R290X 
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Mighty-iTX
(12 items)
 
One foot in..
(17 items)
 
mATX
(12 items)
 
CPUMotherboardGraphicsRAM
i7-4770K M7-Impact Strix GTX980 Samsung 
Hard DriveCoolingOSMonitor
Crucial M4 256 Glacer 240L W8.1 K272HUL 
KeyboardPowerCaseMouse
Saitek Seasonic X-650 Prodigy MX518 
CPUMotherboardGraphicsGraphics
4770K/45/43 Maximus VI Extreme R290X R290X 
RAMHard DriveHard DriveOptical Drive
Samsung Crucial M4 64GB RAIDR LSSWM 
CoolingOSMonitorKeyboard
Cooler Master Glacer 7 Ultimate 64 SyncMaster Eclipse 
PowerCaseMouseMouse Pad
XFX 1050 BE 600T Silver MX518 Desk 
CPUMotherboardGraphicsRAM
i5-4330 Z87 Gryphon GTX690 G.Skill RipJawsX 
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WD Blacks Hyper 212 W8.1 ACER 
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post #5 of 19
Thread Starter 
Yes all test with all boards were done outside of thE case with the boards resting on their boxed packaging. Tbh it'd be aggravating having to load and unload out of the case lol. However with the second gigabyte board I did place it into the case and screw it down in hopes of maybe a ground with the leads from the screwholes being the issue. Not sure if I said that right. Nonetheless it didn't solve the problem unfortunately.

Yay for the power on button for the asrock that board is very much more impressive looking than the pictures shown on the site

I unfortunately don't have a spare PSU or CPU ATM. HowEver as one of you noted, and I stated earlier, the CPU tested fine on the openboxed motherboard. It's possible since then something slog the way may have messed it up, I do not know - I made sure to reattach the heatsink and fan everytime. Also even with the CPU removed I would have thought that I would at least get an error beep from the board (made sure to attach the speaker )

Again just to reiterate, the board powers on. Both the asrock and gigabyte boards exhibited the same behavior. They both power on, CPU fan and gpu fan both pushing air. However I get no post or audio cues from the board as well as no display/video output. I've nothing else connected such as USB or anything. I've purposely even left out components such as ram or CPU to see if I could receive an error beep, but no such luck.
Edited by redoubt9000 - 5/13/11 at 9:52am
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 AsRock 890FX Deluxe5 Radeon R9 290, Radeon HD 4850 12 GB DDR3 
Hard DrivePowerCaseAudio
OCZ Agility 3 Sunbeam 750w Xlcio WTBK Advanced Focusrite Saffire Pro 24 DSP 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 AsRock 890FX Deluxe5 Radeon R9 290, Radeon HD 4850 12 GB DDR3 
Hard DrivePowerCaseAudio
OCZ Agility 3 Sunbeam 750w Xlcio WTBK Advanced Focusrite Saffire Pro 24 DSP 
  hide details  
Reply
post #6 of 19
A computer I fixed in the past had a bad PSU that I didn't know about and the mobo was bad as well (had blown capacitors), I replaced the mobo but because the PSU was bad it fryed the new mobo as well. So I had to send back the mobo and replace the PSU. You could get an inexpensive PSU just for testing to rule it out.
Demonikware 2.0
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-4770K ASUS MAXIMUS VI HERO EVGA GeForce GTX 670 G.SKILL Trident X Series 
Hard DriveHard DriveOSMonitor
SAMSUNG 840 Series SSD SAMSUNG Spinpoint F3 HD103SJ Windows 8.1 Pro Samsung 2443BWT 24" LCD 
KeyboardPowerCaseMouse
Logitech G15v2 CORSAIR HX Series 620W Corsair Carbide Series White 500R Logitech G9 
Mouse Pad
Steelseries 
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Demonikware 2.0
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-4770K ASUS MAXIMUS VI HERO EVGA GeForce GTX 670 G.SKILL Trident X Series 
Hard DriveHard DriveOSMonitor
SAMSUNG 840 Series SSD SAMSUNG Spinpoint F3 HD103SJ Windows 8.1 Pro Samsung 2443BWT 24" LCD 
KeyboardPowerCaseMouse
Logitech G15v2 CORSAIR HX Series 620W Corsair Carbide Series White 500R Logitech G9 
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Steelseries 
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post #7 of 19
Thread Starter 
I'll be back in a few hours then and will be sure to give an update. Unfortunately bestbuy is the only available electronics store here that would sell psus . But considering psus are not at all expensive for moderately rated watts it shouldn't be too big an expenditure. although Id guess radioshack would carry them... But US malls give me the creeps so >_<

If perhaps it is the CPU.... Thank goodness the bulldozers are just around the corner >_> this baby supports em! Tho I've been burned by mobs in the past that claimed comPatibility with future processors... Well see if it comes to that
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 AsRock 890FX Deluxe5 Radeon R9 290, Radeon HD 4850 12 GB DDR3 
Hard DrivePowerCaseAudio
OCZ Agility 3 Sunbeam 750w Xlcio WTBK Advanced Focusrite Saffire Pro 24 DSP 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 AsRock 890FX Deluxe5 Radeon R9 290, Radeon HD 4850 12 GB DDR3 
Hard DrivePowerCaseAudio
OCZ Agility 3 Sunbeam 750w Xlcio WTBK Advanced Focusrite Saffire Pro 24 DSP 
  hide details  
Reply
post #8 of 19
Quote:
Originally Posted by redoubt9000 View Post
Yay for the power on button for the asrock that board is very much more impressive looking than the pictures shown on the site
Yeah it's nice. I like those too.
The Bedroom PC
(13 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Duo T9500 0KU184 Intel 965 2GB DDR2 
Hard DriveOptical DriveOSMonitor
Samsung 850 Pro 128GB TSSTCorp TS-L632D Windows 8.1 64-bit Dell 1440x900 built-in LCD 
Mouse
Mouse? What mouse? 
  hide details  
Reply
The Bedroom PC
(13 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Duo T9500 0KU184 Intel 965 2GB DDR2 
Hard DriveOptical DriveOSMonitor
Samsung 850 Pro 128GB TSSTCorp TS-L632D Windows 8.1 64-bit Dell 1440x900 built-in LCD 
Mouse
Mouse? What mouse? 
  hide details  
Reply
post #9 of 19
Thread Starter 
Yup it was the PSU alright. Very very strange, I suppose I hapPened to land on odds in my favor when the old PSU decided to work when I hooked up together that openboxed mobo. But everything now good to go, and that ASrock board is lighting up beautifully

I'm glad I posted on this forum again as I was torn on whether ir not I should bother going out and buying a PSU... Lol I should have done so from the beginning looking back on how everything was behaving...

Thx again all! I'm gonna pick up another low watt PSU from newegg as a backup just to be on the safe side whenever I nd to troubleshoot again... Bestbuy is too exPensive for my blood >_>
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 AsRock 890FX Deluxe5 Radeon R9 290, Radeon HD 4850 12 GB DDR3 
Hard DrivePowerCaseAudio
OCZ Agility 3 Sunbeam 750w Xlcio WTBK Advanced Focusrite Saffire Pro 24 DSP 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 AsRock 890FX Deluxe5 Radeon R9 290, Radeon HD 4850 12 GB DDR3 
Hard DrivePowerCaseAudio
OCZ Agility 3 Sunbeam 750w Xlcio WTBK Advanced Focusrite Saffire Pro 24 DSP 
  hide details  
Reply
post #10 of 19
Quote:
Originally Posted by redoubt9000 View Post
Yup it was the PSU alright. Very very strange, I suppose I hapPened to land on odds in my favor when the old PSU decided to work when I hooked up together that openboxed mobo. But everything now good to go, and that ASrock board is lighting up beautifully

I'm glad I posted on this forum again as I was torn on whether ir not I should bother going out and buying a PSU... Lol I should have done so from the beginning looking back on how everything was behaving...

Thx again all! I'm gonna pick up another low watt PSU from newegg as a backup just to be on the safe side whenever I nd to troubleshoot again... Bestbuy is too exPensive for my blood >_>
Wow. That goes to show the PSU can do super weird things sometimes, even when it seems that it isn't the problem! Have fun with a working PC!
The Bedroom PC
(13 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Duo T9500 0KU184 Intel 965 2GB DDR2 
Hard DriveOptical DriveOSMonitor
Samsung 850 Pro 128GB TSSTCorp TS-L632D Windows 8.1 64-bit Dell 1440x900 built-in LCD 
Mouse
Mouse? What mouse? 
  hide details  
Reply
The Bedroom PC
(13 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Duo T9500 0KU184 Intel 965 2GB DDR2 
Hard DriveOptical DriveOSMonitor
Samsung 850 Pro 128GB TSSTCorp TS-L632D Windows 8.1 64-bit Dell 1440x900 built-in LCD 
Mouse
Mouse? What mouse? 
  hide details  
Reply
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