My plan to help her out tomorrow is this:
1. Find new power cable to go from wall outlet to PSU, then start computer.
2. Unplug all external devices (mouse, keyboard, monitor), then turn on computer.
3. Remove case power button from mobo, touch pins together with flat head screwdriver to try to start computer.
4. Remove cmos battery, put cmos battery back in, turn on computer.
5. Disconnecting all drives, all PCI/PCIe cards, all case fans, all external devices (leaving only the CPU fan plugged in). Then start computer while seeing if CPU fan turns.
6. Same as above with RAM sticks removed.
7. Remove PSU from case, disconnect all plugs from PSU, test PSU with a multimeter/voltage meter (will google for instructions). If multimeter is not available place paperclip on the green and black wire of the atx plug with having a case fan plugging in the psu and flipping the power on to see if the fan spins.
8. If the steps 1 through 6 fail to start the computer, and step 7 turns on the case fan plugged into the PSU, than diagnose the problem as mobo failure, salvage drives and nVidia video card from the comp, and move on to a new comp. If PSU doesn't activate fan, diagnose the problem as dead PSU.
Does anyone have any other steps they might recommend, or critiques of those steps? And any idea on how much of a shock or what bad result might happen if she screws up testing the PSU with voltage meter or paperclip? I mean, if this could give her a seriously painful shock or cause a fire, I won't have her test the PSU, I'll just go with my intuition that it's the mobo.
Also, the pins on the mobo for the power button, could touching together the wrong 2 pins (power button pins) with the screw driver mess something up?
Edited by RB_Kandy, 14 June 2011 - 04:42 PM.