I have a 4 or 5 year old secondary computer that will not recognize a mouse or keyboard. I'm using a CablesToGo 4 port switch to toggle between 3 computers. This switch has PS2 input connections with USB outputs. The other 2 computers work fine so I know it's not the keyboard or mouse. Have tried disconnecting the switch and attached another USB keyboard and mouse and the computer will not recognize them either. I have tried tapping the F8 key on bootup but no luck there either. Since I have user passwords, the system gets to the login screen and no further.
Thanks for your help!