Computer freezes on CGminer start

[janpec1000]

Guys i have problem, when i start CGMiner computer freezes. I think that display driver collapses as i cannot do anything anymore on computer. That happens if i use intensty above 13 on mining, otherwise it doesnt happen. Could someone point what could be problem using 13 intensity is ofcourse not option becouse Khash are way too low.
Btw there are times that i can normally launch at 20 intensity and this problem doesnt happen. There are no HWs when mining at 20 intensity. 2 days ago electricity went out and after that i always get freeze when starting on intensity 20, i have no idea why does that have some impact.

Thanks for help inputs.

[1715631084]

1715631084

[1715631084]

1715631084

[Minerist]

Try to switch bios or flash it, had similar shit happening to me.