Pc turned on but cpu and case cooler dont work

Mukachaka

Prominent
Jul 10, 2017
59
0
630
Only psu is working. Monitor says no cable connected. cpu fan and case fan dont work. Is it mobo issue or CPU problem ? Please tell me what problem could cause it.
 

Mukachaka

Prominent
Jul 10, 2017
59
0
630
All cables are connected to a correct location.. when installing a cpu, a mobo socket was scratched very slightly by cpu edge. Could it be a cause of this problem ? I bought cpu and mobo very recently.