Hi, I've the following problem: My laptop (Acer Aspire S3, Windows 8.1) doesn't see my external screen anymore (Samsung P2370, connected with HDMI->DVI). It used to be fine, with plugging in and out when needed, copied or shared screens and all. Now, the computer doesn't see that there's an external monitor connected - when I try to switch between them (Function + F5), I only get the laptop's screen as a choice. No plug&play dingaling when I plug the cable in or out.
The external monitor does see a difference, though: when the cable's plugged in, it's black, and when it's out, I get the floating "check signal cable".
Sometimes, very rarely and unfortunately that last time has been a while, it does work without any problems. Sometimes, also rather rarely, the laptop shuts down when I plug the thing in (or out? forgot).
I updated the graphics driver through the device manager and while there actually was an update, it makes no difference.
I tried another cable with another monitor (which work with another computer) - same thing unfortunately.
All of this might (!) have started around the time of the latest Windows update, but this could be a coincidence only.
Where could the problem be - cable/plug, socket, Windows...?
