I am building a new PC but am currently tearing my hair out trying to work out what the problem is.
ASUS Prime B250-A Motherboard
Intel i7 LG1151 CPU
2 x 16Gb Ballistix DDR-4 RAM
Have taken it back to basics and breadboarded - with power (main & CPU) plugged in, CPU fan plugged in and power buttons (have double checked manual for pins). The motherboard lights up but neither fan spins and nothing happens. There's no on-board speaker so I don't know if anything's beeping.
I know that the PSU and CPU fan are good - I have installed with another motherboard and all works perfectly. Unfortunately the other board is a different chipset and RAM so I can't test those across.
I have also received a replacement motherboard from Asus so I'm assuming the board isn't the problem.
How can I determine if it's the RAM or the processor? (Can't believe it could be anything else) I've double checked processor is seated correctly and made sure there's not too much thermal paste. Have tried with and without RAM installed, and have tried RAM in each slot.