How to enable monitor on integrated graphics?

Question

Video cards

I sold my GTX660 in the morning, I thought now I’ll go to the store for an adapter from dvi (from the motherboard) to HDMI (monitor wire).
And here I come, I connect Monique through it to the motherboard. And nothing. The screen says connected but goes to sleep. Those. black screen. Information is not transmitted.
Motherboard h81m-e from Asus
Processor i5 4670 with integrated graphics
Monitor hp 24em Pulled
out the battery from the BIOS, assuming that the problem was in it, also reset it by dragging the lock on the CLRTC. No use.
What else can you suggest?
I can’t enter BIOS, there is no more discrete vidyuhi