07-17-2017 09:12 AM
A few weeks ago I plugged my Lenovo B580 laptop into my new 4K screen. When I turned on my laptop, my built-in screen showed some queer colours, then went black and lastly grey. My 4K screen received signals from my laptop, but my built-in screen was just lighted up and grey. I tried unplugging the screen, but nothing happened. I rebooted my laptop without the screen plugged in. The Lenovo logo showed up fine, but then the screen turned black and then grey with no signal again. I've tried everything I know, but nothing worked. Please help!
07-17-2017 09:26 AM