Switched on my NUC which is connected via HDMI and I got a completely corrupted with lots rgb lines and two thick black lines and nothing else. It doesn't boot.
Tried the jumpers for the bios reset but still get the same screen and nothing else.
Picture attached hopefully!
edit: taken SSD out and tried different memory. Different monitor and HDMI cable.
edit: did a BIOS recovery, which displayed ok and did the recovery but when booting normally the screen returned to the picture attached. No USB is active so can't do any key presses.
Fixed it - after recovering the BIOS I needed to take out the USB stick (leaving the jumper pins off), restore BIOS defaults. The BIOS recovery doesn't actually reset the BIOS settings...