in my laptop F9 is to access boot menu. but the problem is when i press it a black screen appears and it shutdowns .i have booted my laptop just 2 months ago .it was working fine then .is it because i have installed windows 10 technical preview ?
i am unable to boot a new operating system into my laptop . when i put a bootable pendrive and restart my pc and press boot button .the screen flashes once and shutdowns .i have samsung laptop . please help