Help Trobbleshoot my MINI - ITX Build. Won't start
I just built my first mini-ITX PC. But it will not start.
The computer turns on very briefly, fans starts then turns off. It don´t even go to the Bios. Atx 12v and Atx is plugged in. Ram is correctly put in, and takenout and tested one at a time. I have tried without the graphics card and boot up (there's graphics card on the motherboard). The PSU comes from my old computer and worked the day before. I've taken the cpu-cooler off again and the CPU out and put it on again. (It is a very large CPU cooler for the mini ITX buld and it is rotated 90 degrees to get space for it).
I made a mistake by not putting 12v connector for the CPU the first power ups, I thought it was only for z87 motherboard. Do you have to clear cmos to let the board forget that the V12 plug does not need to be in?