BleepingComputer.com: Gateway 3200s Replacement Mobo

Hi guys, new here and I have an issue. I do some comp work on the side and have an elderly man who's computer quit when the power went out. He has cable internet and tv, the tv was messed up also. Leads me to believe that the surge came through the cable, through modem and into mobo. This is the second time this has happened and I just ordered a new board and fixed it last time. Now this time, I have had my fill. I ordered a new board, got it installed, and nothing. PSU will not turn on, no spin up, nothing but a green LED on the mobo. Power is going to the switch, and the switch is fine. PSU will power up and run a fan, with the voltages of 11.5, 6.8, and 3.3. That looks fine. So I RMAed the board and got another (with the wrong socket), rma'ed that one, and just got the new one. Same issue, nothing but an LED. The proc is seated fine, the wires are as described on the Gateway website, the mobo is not the same as the OEM one, but the same as the first replacement board that worked (first lightning strike). I just dont get it... any help, I am 113 bucks in the hole right now. I dont want to be wrong and eat it. This is not my profession, just passion.

Hi

Do you hear any bleep codes when you power up?
With the 12V rail slightly low and the 5V rail high I suggest you have another look at the PSU before you do anything else.
Have you tested the PSU voltages under load?
I purchased one for about £10 (thats $20 to you) and have found it invaluable.
Follow this link for the sort of thing I mean http://www.eclipsecomputers.com/product.as...UTEST&af=50
If you are sure the PSU is ok, try disconnecting/unplugging anything that is unecessary for the PC to boot - CD/DVD Drives, Secondary Hard Drives, Floppy Drive, PCI/PCIE cards (other than graphics card) and peripheral devices.
It's all about a process of elimination.

To rule out the CPU, put the whole thing back together minus the processor. If it starts up and remains running, it's the CPU