Everything worked fine for a few months ago. After that i tried to boot into bios settings page and it is just black. But I am still able to boot into Windows. Then I tried to reset cmos and try again to get into bios. But it is different this time, I am not able to press anything until I saw "press f1 to recover bios setting". After pressing f1, it shows again the black screen. Stuck there and not able to get in both Windows and bios.
Motherboard - Z87-A
Keyboard - both ps2 and usb
Motherboard - Z87-A
Keyboard - both ps2 and usb