i just upgraded today my RAM,CPU and MB and when i started my pc there were nothing on the screen so basically it didn't recognize it i noticed also that my keyboard and mouse didn't switsh on and so the fans that i installed
what may be the cause ??
my pc build :
CPU : I5 7400
MB : MSI B250 PRO-VD
GPU : Leadtek WinFast GTX 770 Hurricane III
RAM : AVEXIR DDR4 16GB PC2400 CORE SERIES BLUE LED
PSU :Cooler Master Silent Pro M - 500W