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Dead Motherboard or CPU?

post #1 of 9
Thread Starter 
After restarting my computer and removing two ram sticks the comp would not start.
Realised eventually that the MB Power wasn't in properly... however smelt a slight plastic burning smell.
After that the screen would not DISPLAY a thing.

Computer boots up fine, lights are all on but screens get no signal.

I've test the PSU on another system and works fine.
Tested the graphics cards and swapped them works fine.
Removed CMOS Battery for a few minutes still no display.
Removed all ram sticks to see if any beeps.. no beeps.
Tried one ram stick on each ram slot, still no display.
Tried onboard VGA, no luck either.


Did I fry my bloody motherboard? Or is it the CPU....
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
1055T 890GPA-UD3H Powercolor 5850 1600 
Hard DriveOptical DriveOSMonitor
Samsung F3 Sony Optiac Windows 7 64bit 2 x BenQ G2411HD 
KeyboardPowerCaseMouse
G15 Thermaltake Toughpower 750 HAF922 G9 
Mouse Pad
Microsoft 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
1055T 890GPA-UD3H Powercolor 5850 1600 
Hard DriveOptical DriveOSMonitor
Samsung F3 Sony Optiac Windows 7 64bit 2 x BenQ G2411HD 
KeyboardPowerCaseMouse
G15 Thermaltake Toughpower 750 HAF922 G9 
Mouse Pad
Microsoft 
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post #2 of 9
The MB might have reverted back to onboard GPU mode. Try plugging the VGA connector into the onboard VGA output and restart.

If that doesn't work, be sure to check all connections for fit and that they're properly installed.

After that, call Gigabyte support for further troubleshooting and RMA options.
 
Acer V7-482PG
(8 items)
 
 
CPUMotherboardGraphicsRAM
Ryzen 5 1400 4.0ghz @1.33V GIGABYTE GA-AB350-Gaming EVGA GeForce GTX 780 Ti Dual Classified w/ EVGA... Mushkin Redline DDR4 3200mhz 16gb (8gb x 2) 
Hard DriveHard DriveHard DriveCooling
Sandisk Plus 256gb Toshiba 7200rpm 2tb Toshiba 7200rpm 2tb Deepcool Gamaxx 400 
OSMonitorKeyboardPower
Windows 10 64bit ASUS Designo MX299Q Logitech K800 EVGA Supernova 750w G2 
CaseMouseMouse Pad
Corsair 270R Logitech performance mouse MX Steelseries QcK 
CPUMotherboardGraphicsRAM
i5-4200u Haswell ULT NVidia GT 750m 12gb DDR3L 1600mhz 
Hard DriveOSMonitorAudio
32gb SSD + 1tb HDD Windows 10 64-bit 14" Glossy AHVA 1080p Touchscreen Realtek HD 
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Acer V7-482PG
(8 items)
 
 
CPUMotherboardGraphicsRAM
Ryzen 5 1400 4.0ghz @1.33V GIGABYTE GA-AB350-Gaming EVGA GeForce GTX 780 Ti Dual Classified w/ EVGA... Mushkin Redline DDR4 3200mhz 16gb (8gb x 2) 
Hard DriveHard DriveHard DriveCooling
Sandisk Plus 256gb Toshiba 7200rpm 2tb Toshiba 7200rpm 2tb Deepcool Gamaxx 400 
OSMonitorKeyboardPower
Windows 10 64bit ASUS Designo MX299Q Logitech K800 EVGA Supernova 750w G2 
CaseMouseMouse Pad
Corsair 270R Logitech performance mouse MX Steelseries QcK 
CPUMotherboardGraphicsRAM
i5-4200u Haswell ULT NVidia GT 750m 12gb DDR3L 1600mhz 
Hard DriveOSMonitorAudio
32gb SSD + 1tb HDD Windows 10 64-bit 14" Glossy AHVA 1080p Touchscreen Realtek HD 
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by nakano2k1 View Post
The MB might have reverted back to onboard GPU mode. Try plugging the VGA connector into the onboard VGA output and restart.

If that doesn't work, be sure to check all connections for fit and that they're properly installed.

After that, call Gigabyte support for further troubleshooting and RMA options.
Tried onboard VGA also same issue no display.
Motherboard is a 890GPA-UD3H so has both DVI and VGA, tried both slots.
Tried 3 diff GFX cards still no display. Tried all GFX cards on other system booted up fine.

Gigabyte warranty is for how long after the purchase?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
1055T 890GPA-UD3H Powercolor 5850 1600 
Hard DriveOptical DriveOSMonitor
Samsung F3 Sony Optiac Windows 7 64bit 2 x BenQ G2411HD 
KeyboardPowerCaseMouse
G15 Thermaltake Toughpower 750 HAF922 G9 
Mouse Pad
Microsoft 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
1055T 890GPA-UD3H Powercolor 5850 1600 
Hard DriveOptical DriveOSMonitor
Samsung F3 Sony Optiac Windows 7 64bit 2 x BenQ G2411HD 
KeyboardPowerCaseMouse
G15 Thermaltake Toughpower 750 HAF922 G9 
Mouse Pad
Microsoft 
  hide details  
Reply
post #4 of 9
Do you have another CPU/Motherboard on hand to test?

What happened prior to it having no display? (Overclocking?)
Check for any "bulged" caps aswell, some might be hidden by VRM coolers.
i7 thing
(8 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4770K 4.4Ghz @ 1.275v Asus Z87 PRO GTX 780 SLI 16GB DDR3 
Hard DriveCoolingPowerCase
128GB SX900 Adata SSD H105 Corsair TX750v2 NZXT Phantom 410 
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i7 thing
(8 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 4770K 4.4Ghz @ 1.275v Asus Z87 PRO GTX 780 SLI 16GB DDR3 
Hard DriveCoolingPowerCase
128GB SX900 Adata SSD H105 Corsair TX750v2 NZXT Phantom 410 
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post #5 of 9
Thread Starter 
Don't have another MB or CPU to test,

I overclocked it fine at 3.4ghz, temps were around 45 degrees max (52 perhaps realistically from coretemp).

Wanted to take out a pair of ram to test it with memtest but on boot wouldnt power up. MB cord reconnected boots up fine but no display now.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
1055T 890GPA-UD3H Powercolor 5850 1600 
Hard DriveOptical DriveOSMonitor
Samsung F3 Sony Optiac Windows 7 64bit 2 x BenQ G2411HD 
KeyboardPowerCaseMouse
G15 Thermaltake Toughpower 750 HAF922 G9 
Mouse Pad
Microsoft 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
1055T 890GPA-UD3H Powercolor 5850 1600 
Hard DriveOptical DriveOSMonitor
Samsung F3 Sony Optiac Windows 7 64bit 2 x BenQ G2411HD 
KeyboardPowerCaseMouse
G15 Thermaltake Toughpower 750 HAF922 G9 
Mouse Pad
Microsoft 
  hide details  
Reply
post #6 of 9
Thread Starter 
Removing the CPU from the mobo and attempting to boot results in the PC not powering up.

Placing the CPU back in and starting makes all the fans and HDDS power up but still no display...
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
1055T 890GPA-UD3H Powercolor 5850 1600 
Hard DriveOptical DriveOSMonitor
Samsung F3 Sony Optiac Windows 7 64bit 2 x BenQ G2411HD 
KeyboardPowerCaseMouse
G15 Thermaltake Toughpower 750 HAF922 G9 
Mouse Pad
Microsoft 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
1055T 890GPA-UD3H Powercolor 5850 1600 
Hard DriveOptical DriveOSMonitor
Samsung F3 Sony Optiac Windows 7 64bit 2 x BenQ G2411HD 
KeyboardPowerCaseMouse
G15 Thermaltake Toughpower 750 HAF922 G9 
Mouse Pad
Microsoft 
  hide details  
Reply
post #7 of 9
CPU gets is power from a 4 or 8 pin connector, if you say the mobo Power connection wasn't fully secure and you smelt burning, That's a fried Mobo. I would pull the mobo, and check the back side where the 24 pin mobo connnection is, I bet you'll find your problem.
post #8 of 9
i also think it is fried mobo because there is no chance of cpu problem in a case like and at that temp., so check your mobo
    
CPUMotherboardGraphicsRAM
AMD A10 5800k MSI FM2-A75MA-P33 Radeon 7660D Corsair Vengeance 1X4GB 
Hard DriveCoolingOSMonitor
Seagate Barracuda 250 GB Cooler Master Hyper TX3 Win 7, Linux Mint 15 Dell 17" LCD (1280X1024) 
PowerCase
Corsair CX430V2 Circle CC 
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CPUMotherboardGraphicsRAM
AMD A10 5800k MSI FM2-A75MA-P33 Radeon 7660D Corsair Vengeance 1X4GB 
Hard DriveCoolingOSMonitor
Seagate Barracuda 250 GB Cooler Master Hyper TX3 Win 7, Linux Mint 15 Dell 17" LCD (1280X1024) 
PowerCase
Corsair CX430V2 Circle CC 
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post #9 of 9
Did you mess with the voltages in the bios at any time? It may not have done damage then, but overtime it may have shorted something or fried its component completely.
Specs
(13 items)
 
  
CPUMotherboardGraphicsRAM
3.20 gigahertz AMD Phenom II X6 1090T ASUSTeK Computer INC. M4N75TD Rev 1.xx NVidia GeForce GTX 570 5 Gigabytes 
Hard DriveOptical DriveOSMonitor
ST3500418AS [Hard drive] (500.11 GB) hp CDDVDW TS-H653R Windows 7 Home Basic 64-Bit LG W2243 
KeyboardPowerCaseMouse
Logitech Illuminated Keyboard 750 Watt Cooler Master HAF 922 Logitech G500 
Mouse Pad
Lazer Kabuto 
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Specs
(13 items)
 
  
CPUMotherboardGraphicsRAM
3.20 gigahertz AMD Phenom II X6 1090T ASUSTeK Computer INC. M4N75TD Rev 1.xx NVidia GeForce GTX 570 5 Gigabytes 
Hard DriveOptical DriveOSMonitor
ST3500418AS [Hard drive] (500.11 GB) hp CDDVDW TS-H653R Windows 7 Home Basic 64-Bit LG W2243 
KeyboardPowerCaseMouse
Logitech Illuminated Keyboard 750 Watt Cooler Master HAF 922 Logitech G500 
Mouse Pad
Lazer Kabuto 
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