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pc won't turn on! help!

post #1 of 11
Thread Starter 
before i dive into what's happening, here's what we're dealing with (i built this rig for about 500 bucks in the summer of '09, added the 2tb drive later):

PSU: corsair 400w http://www.newegg.com/Product/Produc...82E16817139008

mobo: biostar TA790GX XE http://www.newegg.com/Product/Produc...82E16813138140

CPU: AMD Athlon X2 7850 BE http://www.newegg.com/Product/Produc...82E16819103678

RAM: g.skill (2x2gb, DDR2 1066) http://www.newegg.com/Product/Produc...82E16820231166

GPU: ati radeon HD 4670 w/ 512 mb ram http://www.newegg.com/Product/Produc...82E16814161252

plus 2 SATA HDD's (2TB storage drive and 640GB OS drive) and an IDE dvd-rom drive

running windows 7 Professional (x64)

with that out of the way, i've got a pretty serious problem on my hands. my computer won't turn on.

when i first got this computer up and running, i played around in the bios a bit, trying to possibly unlock my x2 into an x4 (no success). i honestly can't remember if i reset the bios settings to the default after that or not, but yesterday after returning home from work, i powered my PC up, and low and behold, i had 4 cores reported as working! windows wanted me to re-run the windows experience test (i figured what the heck, i needed to go get a drink anyway). i started the test, got my drink, sat back down, and watched as the whole system just turned off. didn't restart itself, didn't go through shutdown, it was like someone pulled the plug. i hit the power button (after smelling for anything burning, which i didn't smell) and got no response.

per the corsair site, i unhooked everything but a case fan from the psu, and shorted the indicated connection on the 24-pin connector w/ a paperclip to see if the psu was bad (the fan and psu fired right up). with everything hooked up, when i hit the power button, i get about 1/2 a second of power to the case fans, then the PSU acts like it's unplugged (no power to anything, no lights, no beeps, no nothing). i tried clearing the cmos, with no effect. i'm at a loss for what to try (i don't have a known working compatible mobo/cpu to test with, all ive got is a 5 yr. old laptop). please help!
Edited by jamesxross - 5/30/11 at 4:48pm
post #2 of 11
unplug your CPU power plug(4/8 pin plug) and start up the comp. If the fans will run your VRM(Mosfets) are dead
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CPUMotherboardGraphicsRAM
FX-8350 ASUS CrosshairV Formula Power Color AX7970 G.Skill Ripjaws Z 2400 10-12-12-31 
Hard DriveCoolingOSPower
A-Data 256G EK Supreme HF, Water Chiller Windows 8 x64 Seasonic Gold X850 
Case
LianLi PC-A77 
CPUMotherboardGraphicsRAM
FX-8320 Gigabyte 990FXA-UD7 Sapphire HD6970 1600 11-11-11-28 
Hard DriveCoolingPowerCase
OCZ Vertex3 120Gb Heatkiller 3.0, GTX140 + GTX120 Seasonic Gold X650 Lian Li PC-7FN 
CPUMotherboardGraphicsRAM
i7-3770K Maximus V Gene Sapphire HD7950 OCZ Platinum 1600 7-7-7-24 
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AMD-1
(13 items)
 
AMD-2
(8 items)
 
INTEL-1
(8 items)
 
CPUMotherboardGraphicsRAM
FX-8350 ASUS CrosshairV Formula Power Color AX7970 G.Skill Ripjaws Z 2400 10-12-12-31 
Hard DriveCoolingOSPower
A-Data 256G EK Supreme HF, Water Chiller Windows 8 x64 Seasonic Gold X850 
Case
LianLi PC-A77 
CPUMotherboardGraphicsRAM
FX-8320 Gigabyte 990FXA-UD7 Sapphire HD6970 1600 11-11-11-28 
Hard DriveCoolingPowerCase
OCZ Vertex3 120Gb Heatkiller 3.0, GTX140 + GTX120 Seasonic Gold X650 Lian Li PC-7FN 
CPUMotherboardGraphicsRAM
i7-3770K Maximus V Gene Sapphire HD7950 OCZ Platinum 1600 7-7-7-24 
Hard DriveCoolingPower
SanDisk 256G Enermax ETD-T60-TB 650W 
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post #3 of 11
Thread Starter 
you've done it! lol, no one i know has had any success in identifying the problem! am i correct in assuming that i need a new mobo, then? any chance these mosfets dying took anything else with them?
post #4 of 11
Yes, you need a new mobo
No, your CPU should be OK.
AMD-1
(13 items)
 
AMD-2
(8 items)
 
INTEL-1
(8 items)
 
CPUMotherboardGraphicsRAM
FX-8350 ASUS CrosshairV Formula Power Color AX7970 G.Skill Ripjaws Z 2400 10-12-12-31 
Hard DriveCoolingOSPower
A-Data 256G EK Supreme HF, Water Chiller Windows 8 x64 Seasonic Gold X850 
Case
LianLi PC-A77 
CPUMotherboardGraphicsRAM
FX-8320 Gigabyte 990FXA-UD7 Sapphire HD6970 1600 11-11-11-28 
Hard DriveCoolingPowerCase
OCZ Vertex3 120Gb Heatkiller 3.0, GTX140 + GTX120 Seasonic Gold X650 Lian Li PC-7FN 
CPUMotherboardGraphicsRAM
i7-3770K Maximus V Gene Sapphire HD7950 OCZ Platinum 1600 7-7-7-24 
Hard DriveCoolingPower
SanDisk 256G Enermax ETD-T60-TB 650W 
  hide details  
Reply
AMD-1
(13 items)
 
AMD-2
(8 items)
 
INTEL-1
(8 items)
 
CPUMotherboardGraphicsRAM
FX-8350 ASUS CrosshairV Formula Power Color AX7970 G.Skill Ripjaws Z 2400 10-12-12-31 
Hard DriveCoolingOSPower
A-Data 256G EK Supreme HF, Water Chiller Windows 8 x64 Seasonic Gold X850 
Case
LianLi PC-A77 
CPUMotherboardGraphicsRAM
FX-8320 Gigabyte 990FXA-UD7 Sapphire HD6970 1600 11-11-11-28 
Hard DriveCoolingPowerCase
OCZ Vertex3 120Gb Heatkiller 3.0, GTX140 + GTX120 Seasonic Gold X650 Lian Li PC-7FN 
CPUMotherboardGraphicsRAM
i7-3770K Maximus V Gene Sapphire HD7950 OCZ Platinum 1600 7-7-7-24 
Hard DriveCoolingPower
SanDisk 256G Enermax ETD-T60-TB 650W 
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post #5 of 11
Thread Starter 
thanks very much i'll probably post a list of prospective mobo's soon (i only built this PC in the first place with help from this forum, and i'm not as hardware savvy as i'd like to be :-P)
post #6 of 11
Thread Starter 
back with a list

i've only got 2, but i'm VERY open to suggestion if any of y'all have better options i'm hoping my AM2+ processor (link in first post) is still ok, so these are am2+ boards. if there are better ones (or cheaper options that are just as good) or anything else i'm overlooking, please don't be afraid to chime in

http://www.newegg.com/Product/Produc...82E16813130307

or

http://www.tigerdirect.com/applicati...773&CatId=2838

i do sorta like the first one for the 4 memory slots, but who am i kidding? the 4gb i have (*fingers crossed that nothing but the mobo was damaged*) is more than enough for me to play WoW.

again, anything i've overlooked or any deals you've spotted would be greatly appreciated. i'm pretty sure that 70 before any rebates or anything like that is my price cap (i'm definitely on a tight budget).

ty in advance
post #7 of 11
MSI is the best at blowing Mosfet's, but out of only searching for a am2+ board that can use 1066 ddr 2, Those seem to be the best ones. Look into this Foxconn too, just only 2 memory slot's. Lower chipset's on that too though.
Simplicity
(16 items)
 
#2 PC
(12 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k MSI Gaming Z170A EVGA GTX 980 Classified Crucial Ballistix Tactical (2 x 8GB) DDR4 2666 
Hard DriveCoolingOSMonitor
Samsung Pro 950 Cryorig H7 Windows 7 Ultimate x64 CrossOver 2560x1440 IPS 
PowerCaseMouseMouse Pad
Rosewill Capstone 550-M Phanteks Enthoo Pro RAZER Abyssus Mirror Special Edition XTRAC Ripper 
AudioAudioAudioAudio
Asus Xonar Essence STX Dayton Audio B652 Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier 8 Inch 60-Watt Powered Subwoofer 
CPUMotherboardGraphicsRAM
Intel q9300 Intel DP45SG MSI TFII GTX 660 Corsair Dominator 1333 
Hard DriveCoolingOSMonitor
Corsair Force 3 90gb Deepcool Gammaxx 300 Windows 7 Samsung SyncMaster 932bw 
KeyboardPowerCaseMouse
Dell Rosewill Lightning 800w CM Stryker Dell 
  hide details  
Reply
Simplicity
(16 items)
 
#2 PC
(12 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k MSI Gaming Z170A EVGA GTX 980 Classified Crucial Ballistix Tactical (2 x 8GB) DDR4 2666 
Hard DriveCoolingOSMonitor
Samsung Pro 950 Cryorig H7 Windows 7 Ultimate x64 CrossOver 2560x1440 IPS 
PowerCaseMouseMouse Pad
Rosewill Capstone 550-M Phanteks Enthoo Pro RAZER Abyssus Mirror Special Edition XTRAC Ripper 
AudioAudioAudioAudio
Asus Xonar Essence STX Dayton Audio B652 Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier 8 Inch 60-Watt Powered Subwoofer 
CPUMotherboardGraphicsRAM
Intel q9300 Intel DP45SG MSI TFII GTX 660 Corsair Dominator 1333 
Hard DriveCoolingOSMonitor
Corsair Force 3 90gb Deepcool Gammaxx 300 Windows 7 Samsung SyncMaster 932bw 
KeyboardPowerCaseMouse
Dell Rosewill Lightning 800w CM Stryker Dell 
  hide details  
Reply
post #8 of 11
Thread Starter 
unfortunately, jagz, that foxconn doesn't list my cpu (linked above) as supported.
post #9 of 11
It should work

Other people in reviews actually got it for same reason, for their Athlon x2 BE's and their ddr2 ram.
Simplicity
(16 items)
 
#2 PC
(12 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k MSI Gaming Z170A EVGA GTX 980 Classified Crucial Ballistix Tactical (2 x 8GB) DDR4 2666 
Hard DriveCoolingOSMonitor
Samsung Pro 950 Cryorig H7 Windows 7 Ultimate x64 CrossOver 2560x1440 IPS 
PowerCaseMouseMouse Pad
Rosewill Capstone 550-M Phanteks Enthoo Pro RAZER Abyssus Mirror Special Edition XTRAC Ripper 
AudioAudioAudioAudio
Asus Xonar Essence STX Dayton Audio B652 Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier 8 Inch 60-Watt Powered Subwoofer 
CPUMotherboardGraphicsRAM
Intel q9300 Intel DP45SG MSI TFII GTX 660 Corsair Dominator 1333 
Hard DriveCoolingOSMonitor
Corsair Force 3 90gb Deepcool Gammaxx 300 Windows 7 Samsung SyncMaster 932bw 
KeyboardPowerCaseMouse
Dell Rosewill Lightning 800w CM Stryker Dell 
  hide details  
Reply
Simplicity
(16 items)
 
#2 PC
(12 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k MSI Gaming Z170A EVGA GTX 980 Classified Crucial Ballistix Tactical (2 x 8GB) DDR4 2666 
Hard DriveCoolingOSMonitor
Samsung Pro 950 Cryorig H7 Windows 7 Ultimate x64 CrossOver 2560x1440 IPS 
PowerCaseMouseMouse Pad
Rosewill Capstone 550-M Phanteks Enthoo Pro RAZER Abyssus Mirror Special Edition XTRAC Ripper 
AudioAudioAudioAudio
Asus Xonar Essence STX Dayton Audio B652 Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier 8 Inch 60-Watt Powered Subwoofer 
CPUMotherboardGraphicsRAM
Intel q9300 Intel DP45SG MSI TFII GTX 660 Corsair Dominator 1333 
Hard DriveCoolingOSMonitor
Corsair Force 3 90gb Deepcool Gammaxx 300 Windows 7 Samsung SyncMaster 932bw 
KeyboardPowerCaseMouse
Dell Rosewill Lightning 800w CM Stryker Dell 
  hide details  
Reply
post #10 of 11
Thread Starter 
what about this one? http://www.newegg.com/Product/Produc...-595-_-Product

it's asus (which i've read is a pretty solid brand) am2+, ddr2 memory, plus newegg has some of these available via their open box pricing, which makes it only 40 bucks.

edit: in a review of the foxconn you linked, someone says "I learned to late, through much research, that 1066 memory speeds are only supported with AMD Phenom processors, not Athlon X2." as mine is an athlon X2 i'd rather not risk my memory not working
Edited by jamesxross - 5/31/11 at 1:17pm
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