Hi. I still use my computer normally yesterday. (I have 2 screens.) And it disconnect external display without any sign, and I connect back, but the resolution is not very good.
And today, my laptop screen just black out, and external screen is currently my main screen. I try to connect back but cannot. Looks like windows cannot find the screen.
(My computer is 4-5 years old, and I use it heavily (12 hours/day) from last week, is there any chance my grachics card broken?)