Spare room?
I haven't returned it to the tip yet, because the TV mode picture was quite sharp.
I can't understand how the DVI input should be less so.
IDEA! CHECK THE WEB!
Did it, and if you're interested, take a peek at this: https://www.pcworld.com/article/2924203 ... -know.html
It may be that your computer simply can't identify the monitor type so it does not know what resolutions it can set it too. Try hunting down a monitor driver for device. Try here first:
