I am using the newest bios (5506)
My problem is that when I plug in a second wireless keyboard/mouse combo using USB my computer does not post and instead stays on a black screen with a hyphen on the top left corner and just continuously beeps FOREVER and will not post! When I turn it off and unplug it and try again, it works flawlessly!
What could be the problem? This has only started recently, it has never had any problems having 2 sets of mouse/keyboard combos before. Also I have tried plugging it into all the different USB ports on the motherboard to no success!
Hello; You can enter the BIOS setup program by repeatedly pressing the key during the boot process. Then access the boot menu and disable the USB option, then hit F10 to safe and exit. Also try to contact the manufacturer of your keyboard for any firmware or software updates for your device.