Monitor doesn't get a signal?

Registration date
Wednesday September 20, 2017
Last seen
September 20, 2017
- Updated on Sep 23, 2017 at 06:51 AM
So when i turn on my computer, it turns on and stuff but my monitor doesnt get a signal...
I tried turnning my pc off amd holding the power button and stuff but it didnt help.
I tried to unplug all of the usbs cables i have on my pc (keyboard, mouse, wifi adapter, WD my book)
And i powered up the pc, which made my monitor work.
But when i connected to usbs back, they didnt work?

So what should i do?
Is it a problem with my power supply?