Question Lowering cpu voltage broke screen output?

Dec 31, 2019
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How is that related?

I was trying too see how low can my i7 9700k take at 4.9hz I lowered the voltage from 1.310 to 1.200 and now there is no signal at the screen .The computer seems working all the lights , fans including the cpu's , keyboard and the mouse are working.

Tried other monitors and cables with no luck

How do I restore the old setting without having acsess to the monitor?

My motherboard: GYGABYTE Z390 AORUS WIFI
 

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