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I have this serious problem.
I have an abit kx7-333R mobo, which has done a great job now I bought a new psu Coolermaster 550W.
Now it wont power up with the new psu. The fan on the psu spins up for only half a second and stops running. No action on the mobo exept for the standby power indicator (yellow indicator on the mobo). It lights up so the +5VSB supplies power to the mobo. So when I press the power button the power indicator (green light on the mobo) lights up for a second, also the reset indicator lights up for a second(red light on the mobo), both indicators turn of after less than a second.
My old psu still works with this mobo.
When I took out the Coolermaster and connected it to a new recent mobo it works. So its not the psu thats the problem or my kx7-333R. The problem is when both are connected to each other that gives the problem.
Now, the ONLY difference I can find between these two PSUs is that my old psu has a -5v rail. Maybe the kx7-333R needs it for the Power Good Signal so the Power On Signal is sent via the mobo.
I have tried everything and spent a couple of days reading on the internet for similar problems.
Took my mobo out of the case unplugged all my pci cards, also my videocard, memory, replaced cpu and heatsink, shorted the green wire to any of the black wires in the power connector so it would fire up . NOTHING seems to be working with this psu attached to this mobo.
I hope anyone can help me to solve this problem.
Abit KX7-333R
Coolermaster RealPower 550W
AMD Athlon 2600+
TWINX1024-3200XL 1GB
Matrox Millennium G400
1x Maxtor Quantum Fireball 541DX
1x PX-708A/UF
I have an abit kx7-333R mobo, which has done a great job now I bought a new psu Coolermaster 550W.
Now it wont power up with the new psu. The fan on the psu spins up for only half a second and stops running. No action on the mobo exept for the standby power indicator (yellow indicator on the mobo). It lights up so the +5VSB supplies power to the mobo. So when I press the power button the power indicator (green light on the mobo) lights up for a second, also the reset indicator lights up for a second(red light on the mobo), both indicators turn of after less than a second.
My old psu still works with this mobo.
When I took out the Coolermaster and connected it to a new recent mobo it works. So its not the psu thats the problem or my kx7-333R. The problem is when both are connected to each other that gives the problem.
Now, the ONLY difference I can find between these two PSUs is that my old psu has a -5v rail. Maybe the kx7-333R needs it for the Power Good Signal so the Power On Signal is sent via the mobo.
I have tried everything and spent a couple of days reading on the internet for similar problems.
Took my mobo out of the case unplugged all my pci cards, also my videocard, memory, replaced cpu and heatsink, shorted the green wire to any of the black wires in the power connector so it would fire up . NOTHING seems to be working with this psu attached to this mobo.
I hope anyone can help me to solve this problem.
Abit KX7-333R
Coolermaster RealPower 550W
AMD Athlon 2600+
TWINX1024-3200XL 1GB
Matrox Millennium G400
1x Maxtor Quantum Fireball 541DX
1x PX-708A/UF