Midway through the maze of my second desktop rebuild I seem to have reached a dead end and would appreciate any advice you can give on what could be the problem and what help I need to complete this project.
The problem is that when I breadboard the motherboard with the CPU, CPU fan and PSU before I attach the other components and install it in the case, the mobo does not seem to want to post or even beep. Just the LED lights on the mobo work right every time. Sometimes when I turn it on the CPU fan spins for a few seconds then stops, spins for a few seconds then stops... However other times when I turn it on the CPU fan seems to start and run normally, so does the HD, and the fan on my graphics card but the mobo still does not beep.
Does this sound like a mobo problem?
To try and figure out why this happens I have tried to breadboard the mobo both with and without RAM, with and without graphics card, with and without hard drive. Still the same result: sometimes CPU fan spins and stops, sometimes all fans and HD spin but no post.
When I connect my LCD to the mobo either via the graphics card or direct to the motherboard I get no signal from the computer. The LCD goes into standby after 10 seconds when it is connected to the mobo just the same as it does when it is not connected.
To try and fix this I have REM'd the mobo and replaced the CPU, CPU fan, and also the PSU that I have tested with a paper clip to see if it is working. I have also tried to clear the CMOS memory via the jumper block and tested the mobo battery to check it is not dead. So I figure either one of these replacement components is not working properly or I have assembled something wrong?
Another issue is that I have just moved from EU to Mexico so maybe the change to 127V 60Hz power supply is causing the problem but I figure my PSU should be able to handle this?
Here are the main specs for my system:
mobo: Intel DQ57TM
CPU: Intel i7 860 2.8Ghz
CPU fan: Coolermaster Vortex 211Q
PSU: Silverstone 850W SST-ST85F-P
The problem is that when I breadboard the motherboard with the CPU, CPU fan and PSU before I attach the other components and install it in the case, the mobo does not seem to want to post or even beep. Just the LED lights on the mobo work right every time. Sometimes when I turn it on the CPU fan spins for a few seconds then stops, spins for a few seconds then stops... However other times when I turn it on the CPU fan seems to start and run normally, so does the HD, and the fan on my graphics card but the mobo still does not beep.
Does this sound like a mobo problem?
To try and figure out why this happens I have tried to breadboard the mobo both with and without RAM, with and without graphics card, with and without hard drive. Still the same result: sometimes CPU fan spins and stops, sometimes all fans and HD spin but no post.
When I connect my LCD to the mobo either via the graphics card or direct to the motherboard I get no signal from the computer. The LCD goes into standby after 10 seconds when it is connected to the mobo just the same as it does when it is not connected.
To try and fix this I have REM'd the mobo and replaced the CPU, CPU fan, and also the PSU that I have tested with a paper clip to see if it is working. I have also tried to clear the CMOS memory via the jumper block and tested the mobo battery to check it is not dead. So I figure either one of these replacement components is not working properly or I have assembled something wrong?
Another issue is that I have just moved from EU to Mexico so maybe the change to 127V 60Hz power supply is causing the problem but I figure my PSU should be able to handle this?
Here are the main specs for my system:
mobo: Intel DQ57TM
CPU: Intel i7 860 2.8Ghz
CPU fan: Coolermaster Vortex 211Q
PSU: Silverstone 850W SST-ST85F-P
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