Hardware Owner's Manual
Page 162
...reconnect them from the system to the monitor. 3 If two monitors are attached to the system, disconnect one monitor attached to either the front or rear video connector. 4 Run the appropriate online diagnostic test. Verify that all attached USB devices and disconnect them . If the system is not related ...keyboard/mouse. If the problem is functioning, enter the system setup program. b Connect the keyboard/mouse to the system. 2 Power down all USB ports are enabled. If the problem is resolved, restart the system, enter the System Setup program, and check if the nonfunctioning USB...
...reconnect them from the system to the monitor. 3 If two monitors are attached to the system, disconnect one monitor attached to either the front or rear video connector. 4 Run the appropriate online diagnostic test. Verify that all attached USB devices and disconnect them . If the system is not related ...keyboard/mouse. If the problem is functioning, enter the system setup program. b Connect the keyboard/mouse to the system. 2 Power down all USB ports are enabled. If the problem is resolved, restart the system, enter the System Setup program, and check if the nonfunctioning USB...