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Trying to diagnose a psu or cpu problem

post #1 of 24
10/23/12 at 7:29am
Thread Starter 
Hey guys I've got a problem. I just got a new motherboard the other day and I cannot get it to post at all. I replaced the previous motherboard thinking that, that was the problem. Well. it wasn't and I already threw the old board in the trash. New motherboard, same problem. It will turn on for a second, then immediately shut off. I jumpered the PSU and tested the voltages, everything checked out. The board gets power to the fans only when I remove the 4-pin cpu plug. Does this indicate a fried CPU? or does the PSU bog down because of a faulty power supply when plugged in? I can't test the voltage at the 4-pin plugged in because it won't turn on. There is absolutely no where in town that I can get a CPU or PSU to test either. What would be your best guess? Thanks.
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Garbage Gamer
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post #2 of 24
10/23/12 at 8:00am
It would seem to be a CPU problem more than anything. Did anything happen before the motherboard change? Any chance of you knocking one of pins on the CPU at all?
Edited by Davayy - 10/23/12 at 8:07am
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post #3 of 24
10/23/12 at 8:23am
Thread Starter 
No, the problem just kind of happened one day. System worked fine for several months, then just nothing. I took it apart and boxed everything up for another several months. Finally decided to get a new motherboard after put it back together one day. Same problem. I was convinced it was the motherboard and wound up throwing that away and getting a new one. Turns out it wasn't the motherboard. Like I said, I've tested the voltages and the psu does seem to be fine for the most part as I cannot test the 4-pin cpu plug while plugged in because it won't turn on with it plugged in. Leading me to suspect the cpu. Pins are fine. I am like 95% convinced I need a cpu, but I figured I'd ask people with more knowledge than myself.
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Garbage Gamer
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AMD Athlon II X3 Rana Biostar A880GZ Evga Nvidia GTX 460 768MB 2X2GB 1600Mhz OCZ  
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Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz T... ASUS P8Z77-I Deluxe LGA 1155 Intel Z77 HDMI SAT... EVGA 03G-P4-2781-KR GeForce GTX 780 3GB 384-bit... G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin... 
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post #4 of 24
10/23/12 at 8:28am
It could be faulty ram? Have you tried booting with 1 stick of RAM or a new set together?
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post #5 of 24
10/23/12 at 9:17am
Thread Starter 
I just tried with different sticks, no go. I think I'm going to have to bite the bullet and get a processor.
Garbage Gamer
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AMD Athlon II X3 Rana Biostar A880GZ Evga Nvidia GTX 460 768MB 2X2GB 1600Mhz OCZ  
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Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz T... ASUS P8Z77-I Deluxe LGA 1155 Intel Z77 HDMI SAT... EVGA 03G-P4-2781-KR GeForce GTX 780 3GB 384-bit... G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin... 
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Garbage Gamer
(14 items)
 
Dream Rig 2013
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AMD Athlon II X3 Rana Biostar A880GZ Evga Nvidia GTX 460 768MB 2X2GB 1600Mhz OCZ  
Hard DriveOptical DriveCoolingOS
500gb WD Caviar Black SATA3 None Stock W7 X64 
MonitorPower
CTX 15-inch CRT Rosewill CAPSTONE 450Watt 
View all
CPUMotherboardGraphicsRAM
Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz T... ASUS P8Z77-I Deluxe LGA 1155 Intel Z77 HDMI SAT... EVGA 03G-P4-2781-KR GeForce GTX 780 3GB 384-bit... G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin... 
Hard DriveCoolingMonitorKeyboard
SAMSUNG 840 Pro Series MZ-7PD256BW 2.5" 256GB S... ZALMAN CNPS12X 120mm Long Life Bearing High Per... AOC q2963Pm Black 29" 5ms HDMI Widescreen LED B... Logitech K800 Black USB RF Wireless Slim Illumi... 
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post #6 of 24
10/23/12 at 9:18am
Hm, alright; good luck and i hope it all gets sorted out!
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hello.
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post #7 of 24
10/23/12 at 9:22am
Thread Starter 
Hey, thanks for trying to help out. +rep
Garbage Gamer
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CPUMotherboardGraphicsRAM
AMD Athlon II X3 Rana Biostar A880GZ Evga Nvidia GTX 460 768MB 2X2GB 1600Mhz OCZ  
Hard DriveOptical DriveCoolingOS
500gb WD Caviar Black SATA3 None Stock W7 X64 
MonitorPower
CTX 15-inch CRT Rosewill CAPSTONE 450Watt 
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CPUMotherboardGraphicsRAM
Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz T... ASUS P8Z77-I Deluxe LGA 1155 Intel Z77 HDMI SAT... EVGA 03G-P4-2781-KR GeForce GTX 780 3GB 384-bit... G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin... 
Hard DriveCoolingMonitorKeyboard
SAMSUNG 840 Pro Series MZ-7PD256BW 2.5" 256GB S... ZALMAN CNPS12X 120mm Long Life Bearing High Per... AOC q2963Pm Black 29" 5ms HDMI Widescreen LED B... Logitech K800 Black USB RF Wireless Slim Illumi... 
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Garbage Gamer
(14 items)
 
Dream Rig 2013
(11 items)
  		 
CPUMotherboardGraphicsRAM
AMD Athlon II X3 Rana Biostar A880GZ Evga Nvidia GTX 460 768MB 2X2GB 1600Mhz OCZ  
Hard DriveOptical DriveCoolingOS
500gb WD Caviar Black SATA3 None Stock W7 X64 
MonitorPower
CTX 15-inch CRT Rosewill CAPSTONE 450Watt 
View all
CPUMotherboardGraphicsRAM
Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz T... ASUS P8Z77-I Deluxe LGA 1155 Intel Z77 HDMI SAT... EVGA 03G-P4-2781-KR GeForce GTX 780 3GB 384-bit... G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin... 
Hard DriveCoolingMonitorKeyboard
SAMSUNG 840 Pro Series MZ-7PD256BW 2.5" 256GB S... ZALMAN CNPS12X 120mm Long Life Bearing High Per... AOC q2963Pm Black 29" 5ms HDMI Widescreen LED B... Logitech K800 Black USB RF Wireless Slim Illumi... 
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post #8 of 24
10/23/12 at 9:26am
Ooh, thanks. You just got me my first flame. REPBACK! thumb.gif
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hello.
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post #9 of 24
10/23/12 at 9:28am
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I also think that this is a CPU problem frown.gif
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post #10 of 24
10/23/12 at 10:36am
What did you use to test the voltages?
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