My desktop is out of commission but I can't tell whether its the motherboard or PSU at fault. Here are some notes I took as I was trying to figure out the problem.
Mobo lights working
CPU fan working
One video card aftermarket fan works (the fan power hooks direcctly into motherboard)
One video card fan does not work (the power for this fan comes from the PSU power connectors to video card)
No power to either card? No video picture from either card. No post screen, nothing at all. Switched cards around, one at a time, etc..
Both video cards are good, tested in another system.
PSU fan and led working
All case fans working
All components including memory reseated, etc..
This problem occurred as I was replacing a CPU fan with a larger fan and heatsink. I may not have been careful enough, and damaged something myself.
I don't really have an extra PSU for testing. My other PSU is an antec 500 watt, an older PSU with no sata and a single power connector for video card. I can use an adaptor for making a second connector but I'm afraid to try and run the broken system on 500w.
MSI 790fx GD70
2x Radeon HD4870 1gb (one with aftermarket fan)
2x 2gb OCZ
Rosewill 750w PSU
I'm guessing it's either the PSU or MOBO but I don't have the money to spend on both, and can't afford to buy one and it not be it. Can the PSU be tested with a voltmeter or something? Can the MOBO be tested the same way? I would be willing to get a volt meter and learn how to test things if the problem can't be figured out.
Mobo lights working
CPU fan working
One video card aftermarket fan works (the fan power hooks direcctly into motherboard)
One video card fan does not work (the power for this fan comes from the PSU power connectors to video card)
No power to either card? No video picture from either card. No post screen, nothing at all. Switched cards around, one at a time, etc..
Both video cards are good, tested in another system.
PSU fan and led working
All case fans working
All components including memory reseated, etc..
This problem occurred as I was replacing a CPU fan with a larger fan and heatsink. I may not have been careful enough, and damaged something myself.
I don't really have an extra PSU for testing. My other PSU is an antec 500 watt, an older PSU with no sata and a single power connector for video card. I can use an adaptor for making a second connector but I'm afraid to try and run the broken system on 500w.
MSI 790fx GD70
2x Radeon HD4870 1gb (one with aftermarket fan)
2x 2gb OCZ
Rosewill 750w PSU
I'm guessing it's either the PSU or MOBO but I don't have the money to spend on both, and can't afford to buy one and it not be it. Can the PSU be tested with a voltmeter or something? Can the MOBO be tested the same way? I would be willing to get a volt meter and learn how to test things if the problem can't be figured out.