Hey anyone has any idea about where is the problem coming from ?
I'm using VGA cable and I tried it on another PC that I'm using right now and it's working fine
also the BIOS doesnt face this problem I just checked them and they are displaying normal
N.B : I just bought this PC
Thanks a lot for the interest in my problem tho I found that the PC that i just bought was using a 4K resolution before i get it and i had to use the following solution
1- Turn on the pc
2- unplug the power cable while the PC is running
and it worked