aatje92 said:
Did you try different USB ports?
Yes. It happens on any two USB ports. It is fine when I have either mouse or keyboard connected but cannot use two at the same time
TenPc said:
Black pixels could infer the wrong resolution, it could be that you currently have the resolution way too low for the monitor to acccept.
Your resolution should not drop lower than 800 x 600.
edit - The mouse combination could be affected by a very low resolution, try to use the mouse only the change the desktop resolution, make sure the monitor is set to default on the Menu Monitor option. Restart, go to BIOS, enable USB mouse/keyboard, Save & exit.
I do not think it is resolution mate. If I leave the screen black more pixels appears everywhere. It just looks like both keyboard and mouse causes short circuit or something like that.
I had difficulty installing fresh operating system cos my PC kept hanging up it was even happening at boot screen but no pixels just hang up.