When I press the power switch the fans start moving, but there is no beep and my monitor stays desperately black. Then I can't shut down or reboot my PC : holding the power switch pressed for a few seconds doesn't shut it down, and the reset switch isn't working. The only way I can stop it is by shutting down the power supply.
How did that happen? I moved to Sweden recently and my PC traveled as checked baggage on the plane. I knew it would get a lot of bumps so I protected it as best as I could but apparently that wasn't enough. When I arrived here I brought it to a computer repair shop that told me the motherboard was dead. When they gave me their price to replace it (1100Kr or about 130€, that's just for replacing the motherboard not for buying a new one!) I decided I'd do it myself.
I spent the full day yesterday installing the new motherboard : read the whole manual, handled all components with care and made sure every last wire was in the right place and properly connected. Then I powered the PC on, only to find out I still have all the same problems plus one : now the fan of my graphic card isn't moving anymore! I double-checked and triple-checked all cables : the video card is properly connected to the power supply and to its PCIEX16 slot, as are the front panel connectors to the motherboard.
My specs :
Motherboard : Gigabyte GA-970A-UD3 (previous one : Gigabyte GA-MA770T-UD3P)
Power supply : Corsair TX650W
Video card : Radeon HD 4870
CPU : AMD Phenom II X4 955 Black Edition
I hope you can help me diagnose the problem, I'm really getting desperate here. It took the computer shop 1 week to get back to me and tell me my motherboard was "dead", then it took me 2 weeks to receive the new motherboard I ordered online, all of this seemingly for nothing. I would go to another computer repair shop to get another opinion but there are no others, this is a small city and I don't have a car here. Could it be the power supply at fault? I don't have a multimeter at hand to check it. I don't hear any unusual noises, only the sound of the fans moving. Also since the reset and power off buttons are not working does that mean the front panel connectors are dead? Thank you.