HP Media Center m400 HP Media Center PC - User's Guide 5990-6456 - Page 219

Problem The monitor doesn't work, even though the computer appears to. The mouse doesn't work, even though everything else does. Solution ■ Make sure the monitor is turned on - it has its own power button. ■ Adjust the brightness and contrast controls on the monitor. ■ Check the connection of the power cord into the monitor. ■ Check the cable connection between the monitor and the computer. The cable connectors must be pushed in all the way. ■ Make sure the monitor power cord is plugged into a grounded outlet. Check to see whether the outlet works by plugging another item into it. (If the light on the front of the monitor is lit, the monitor is getting power.) n When Media Center is open, you can press F1 on the keyboard to open Media Center Help. ■ If nothing happens when you move the mouse, it's possible that the mouse is connected improperly. ■ USB mouse only: Make sure the mouse is firmly connected to the USB port. Try unplugging and replugging the mouse cable. ■ PS/2 mouse only: Check that the cable connector pins are straight. Make sure the mouse is connected to the mouse port, not to the keyboard port. To reconnect these two cables, turn the computer off, reconnect the cables, and then turn the computer back on. ■ If the pointer doesn't move on the screen when you move the mouse, clean the mouse. For an optical mouse, wipe the light sensor lens on the bottom of the mouse with a lint-free cloth. For a roller ball mouse: a Remove the mouse ball by unscrewing the bottom of the mouse. b Clean the mouse ball with a damp cloth (not paper). c Use your finger to move the rollers in the mouse ball housing and remove lint and dust. d Replace the mouse ball and screw on the cover. ■ The computer might have stopped. Reset the computer by pressing and holding the computer On button until the computer turns off (approximately 5 seconds). Then turn the computer back on. Troubleshooting 213