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Troubleshooting mobo/CPU

post #1 of 4
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+REP to helpful answers!

Maybe some of you know this much already: My computer randomly died on me last Monday. I used it at lunch and everything was gravy, then I came home after work and it would not even turn on. Everything connected to the same power strip was still working; printer, soundcard, scanner, monitor still work fine, so I assume that means there wasn't a power surge. (It was sunny that day) At first I assumed it was the PSU, so I RMAed it. A few days later a friend loaned me another PSU to test it and I still could not get it to power on. I took everything out of the case, and hooked up ONLY the CPU, RAM, Vid Card. Still nothing. At least the mobo LED indicator shoud light up if it's connected to power, but it does not. So I am going to RMA the mobo now... I have no idea what went wrong here...

Anyway my question is: I am beginning to think maybe the CPU might be overheated/dead as well. Like I said, I really don't know what happened since I was gone when it all went down. If I get a new motherboard back, is there any DANGER of putting a bad CPU into it to test it? Like, can a toasted CPU ruin a motherboard? What will happen if I put in a dead CPU and try to turn on the system? (I will do it with only CPU/RAM/Vid Card of course) Is there anything else I should be aware of before I try to reassemble things? +REP to helpful answers!
Hedy
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 750 @ 3.5(175x20) & 4.2(175x24) dynamic OC MSI GD65 P55 MSI HD 5750 1GB G.SKILL Ripjaw 4GB DDR3 1600 
Hard DriveOSMonitorKeyboard
400GB WD SATA + 1.5TB WD SATA external Win 7 Ultimate Viewsonic 17" & NEC 19" Saitek Eclipse II 
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Hedy
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 750 @ 3.5(175x20) & 4.2(175x24) dynamic OC MSI GD65 P55 MSI HD 5750 1GB G.SKILL Ripjaw 4GB DDR3 1600 
Hard DriveOSMonitorKeyboard
400GB WD SATA + 1.5TB WD SATA external Win 7 Ultimate Viewsonic 17" & NEC 19" Saitek Eclipse II 
PowerCaseMouse
Fortron Source 530W Blue Storm Antec 300 Microsoft "Laser" 
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post #2 of 4
You shouldn't have any problems at all when it comes to installing a bad CPU. I have teasted cpu's in my rig more then once and some were bad and some worked just fine. If the LCD light on your MB didn't come on then it's likely your MB died and the cpu will be just fine. ( you can only hope )
My System
(13 items)
 
  
CPUMotherboardOSMonitor
3400 newcastle ABIT NV8 Windows Xp Pro Sony SDM-HS74P 
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Logitect X connect 500 watt DYNAPOWER Blackwidow Micro wireless 
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My System
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CPUMotherboardOSMonitor
3400 newcastle ABIT NV8 Windows Xp Pro Sony SDM-HS74P 
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Logitect X connect 500 watt DYNAPOWER Blackwidow Micro wireless 
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post #3 of 4
i would agree with Lone136 a powered motherboard will give you some type of warning like the number codes on some newer abit board old the bios beeps of some older boards.. the fact that the MB light did not turn on sounds like a power issue either the board is burnt or its only getting partial power either way with your RMA you should be okay at least this way you will know that the board is good to start with your trouble shooting is correct break it down to the very basics MB RAM CPU VIDEOCARD ( i dont even connect a mouse or keyboard) fire it up if it doesnt post you know its one of those 4 items placeing a burnt cpu or a dead cpu will not affect the board at all it will simply keep it from posting
    
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Intel I7 2600k Asus p8p67-Deluxe Zotac GTX780 6GB OC G-skill Ripjaws 1866 
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Samsung 840 EVO 250 Samsung EVO 120 Western Digital 1TB Black Lite On 20x DVD RW 
CoolingOSOSOS
XSPC RayStorm + 360Extreme Rad Arch Linux Windows 8.1 x64 WindowsRE 
MonitorKeyboardPowerCase
Asus PB278Q ThermalTake Meka G1 Evga SuperNova 1000 P2 Xigmatek Elysium 
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CPUMotherboardGraphicsRAM
Intel I7 2600k Asus p8p67-Deluxe Zotac GTX780 6GB OC G-skill Ripjaws 1866 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 EVO 250 Samsung EVO 120 Western Digital 1TB Black Lite On 20x DVD RW 
CoolingOSOSOS
XSPC RayStorm + 360Extreme Rad Arch Linux Windows 8.1 x64 WindowsRE 
MonitorKeyboardPowerCase
Asus PB278Q ThermalTake Meka G1 Evga SuperNova 1000 P2 Xigmatek Elysium 
MouseMouse PadAudio
Logitec G500 Gaming Mouse Ultra Pad Fiio E-17 + ATH-M50 
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post #4 of 4
i agree. if the lights on the mb dont come up then its not getting any power. as for why it would suddenly die like that is a mystery. ive heard a case where the 4 pin connecter wasnt in all the way and it got loose and the user plugged it back in and everything turned off on him and his system was toast.
    
CPUMotherboardGraphicsRAM
Intel Q6600 G0 @ 3.6 GHz DFI Lanparty DK P35-T2RS Sapphire HD4850 @ 700/1035 2 x 2gb GSkill DDR1000 
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320gb + 2x750gb + 1tb + 2tb NEC 3550a 7 Ultimate x64 Dell Ultrasharp 2005FPW 
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Logitech DiNovo Edge Thermaltake 750w Rocketfish (Lian-Li PC-A71) Logitech MX700 
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CPUMotherboardGraphicsRAM
Intel Q6600 G0 @ 3.6 GHz DFI Lanparty DK P35-T2RS Sapphire HD4850 @ 700/1035 2 x 2gb GSkill DDR1000 
Hard DriveOptical DriveOSMonitor
320gb + 2x750gb + 1tb + 2tb NEC 3550a 7 Ultimate x64 Dell Ultrasharp 2005FPW 
KeyboardPowerCaseMouse
Logitech DiNovo Edge Thermaltake 750w Rocketfish (Lian-Li PC-A71) Logitech MX700 
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