Solve : Computer powers on and runs but no display?

1.	Solve : Computer powers on and runs but no display?
Answer» Hi I am currently running the following amd quad core 9850 biostar ta780g m2+ motherboard 2 Sata hdds 8gb of 1066 ram and a radon hd 5770 graphics and a sound card Problem I have was it froze all of a sudden in game (call of duty mw3 of all games!) so I tried the ctrl alt del and nothing left it for half an hour and still nothing. So decided to hit the reset button then nothing from my graphics card. Pc powers up but no display do thought ok graphics card might of gone so removed graphics card and plug into the onboard graphics. Still nothing so decided to remove everything ram hdds cd drives sound card and tried a different slot for my ram nothing. So decided to remove heatsink and fan of CPU and see if it gets hot to touch. Powered up and CPU was stone cold. Is my motherboard knackered processor knackered??!! Also noticed fan for CPU powers up and runs so definatly have power to the mobo! Any SUGGESTIONS would be highly and greatly appreciated. Regards m.harding Monitor also worksDo you have another power SUPPLY you can try? Quote Also noticed fan for CPU powers up and runs so definatly have power to the mobo! Could be that only part of the PSU is bad. Quote from: Linux711 on November 10, 2011, 05:47:37 PM Do you have another power supply you can try? Could be that only part of the PSU is bad. the CPU is powered off the mother board so if the psu wasn't working would that not make the fan run on the CPU? I thought if CPU fan is powered off the mobo it should be fine but I could be wrong? Not necessarily, it could be that only certain voltages out of the power supply went bad. I think it is probably more likely though, that either the CPU or motherboard is bad, I just thought that it would be easier to just test a different PSU. Quote from: Linux711 on November 10, 2011, 06:12:22 PM Not necessarily, it could be that only certain voltages out of the power supply went bad. I think it is probably more likely though, that either the CPU or motherboard is bad, I just thought that it would be easier to just test a different PSU. Ok I've got my old psych I shall try that and post reports back thanks for the advice on the psu. Greatly appreciated M.Harding Did you try atleast one stick of RAM module only?Yeah I tried each one separately just incase they were fried. I also tried a new stick of ram and still Nothing. Also tried my Other psu that I know works fine and nothing so thinking motherboard is dead?? Make sure you attached a keyboard when pc boots without display. The keyboard on lights, NUMLOCK responding will know if there is activity. While CMOS battery removed, try reapplying thermal paste on CPU and make sure it is properly locked on heatsink. If possible, check the processor pins for any dirt or dust then use just one stick of RAM(alternately), integrated components, single hard drive. Press power button about 10 to 15 seconds before plugging and check again for the result.

Answer»

Hi I am currently running the following amd quad core 9850 biostar ta780g m2+ motherboard
2 Sata hdds 8gb of 1066 ram and a radon hd 5770 graphics and a sound card

Problem I have was it froze all of a sudden in game (call of duty mw3 of all games!) so I tried the ctrl alt del and nothing left it for half an hour and still nothing. So decided to hit the reset button then nothing from my graphics card. Pc powers up but no display do thought ok graphics card might of gone so removed graphics card and plug into the onboard graphics. Still nothing so decided to remove everything ram hdds cd drives sound card and tried a different slot for my ram nothing. So decided to remove heatsink and fan of CPU and see if it gets hot to touch.
Powered up and CPU was stone cold.

Is my motherboard knackered processor knackered??!! Also noticed fan for CPU powers up and runs so definatly have power to the mobo!

Any SUGGESTIONS would be highly and greatly appreciated.

Regards m.harding Monitor also worksDo you have another power SUPPLY you can try?

Quote

Also noticed fan for CPU powers up and runs so definatly have power to the mobo!

Could be that only part of the PSU is bad. Quote from: Linux711 on November 10, 2011, 05:47:37 PM

Do you have another power supply you can try?

Could be that only part of the PSU is bad.

the CPU is powered off the mother board so if the psu wasn't working would that not make the fan run on the CPU? I thought if CPU fan is powered off the mobo it should be fine but I could be wrong? Not necessarily, it could be that only certain voltages out of the power supply went bad. I think it is probably more likely though, that either the CPU or motherboard is bad, I just thought that it would be easier to just test a different PSU. Quote from: Linux711 on November 10, 2011, 06:12:22 PM

Not necessarily, it could be that only certain voltages out of the power supply went bad. I think it is probably more likely though, that either the CPU or motherboard is bad, I just thought that it would be easier to just test a different PSU.

Ok I've got my old psych I shall try that and post reports back thanks for the advice on the psu.
Greatly appreciated

M.Harding Did you try atleast one stick of RAM module only?Yeah I tried each one separately just incase they were fried. I also tried a new stick of ram and still
Nothing. Also tried my Other psu that I know works fine and nothing so thinking motherboard is dead?? Make sure you attached a keyboard when pc boots without display. The keyboard on lights, NUMLOCK responding will know if there is activity. While CMOS battery removed, try reapplying thermal paste on CPU and make sure it is properly locked on heatsink. If possible, check the processor pins for any dirt or dust then use just one stick of RAM(alternately), integrated components, single hard drive. Press power button about 10 to 15 seconds before plugging and check again for the result.

Solve : Computer powers on and runs but no display?

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