Have you applied the correct standoffs to the board? One more extra could possibly short the board.
I'm looking for help with a build that will not run.
In short, with the PC powered on, the CPU cooling fan runs and the hard drive runs but there is no light from the optical mouse and the keyboard LED's won't come on. There's also no video.
Gigabyte GA-78LMTUSB3 mother board
XFX TS550 power supply
Crucial Ballistix Sport 8GB Kit (4GBx2) DDR3 1600 (PC3-12800) 240-Pin UDIMM Memory
AMD FD6300WMHKBOX FX-6300 CPU
I suspect I made an error in installing the power supply, possibly with the ATX 8-pin connector. Power supply documentation is sparse.
Any suggestions of what I did wrong?