Hardware Inter-Connectivity

General Trouble Shooting

Troubleshooting area: System unit.

Problem Possible Cause Action The computer does not get powered on. 1. Bad power supply. 2. System Problem. 1. Use another power socket and check whether it works. 2. Call hardware engineer. "Non-system disk or disk error". 1. Non-bootable floppy in A drive. 2.Corrupted system files 3. Virus infection. 1. Remove disk and boot again. 2. Boot from new floppy. 3. Call hardware engineer.

Troubleshooting area: Keyboard.

Problem possible Cause Action Keyboard not responding or printing wrong characters. Bad or loose cable. Re-connect cable. One or more key do not work. Bad key. Call engineer to get key replaced. Keyboard is printing either upper or lower character only. The Shift or Caps Key may be stuck. Loosen key or get key replaced.

Troubleshooting area: Mouse.

Problem Possible Cause Action Moving mouse does not produce movement of cursor. Ball is coated with dust. Wash ball with warm water. The movement of cursor on screen is erratic. The mouse cable is either twisted or knotted. Straighten the cable. The mouse is not responding to any movement. 1. The ball is stuck. 2. The mouse cable is broken. 1. Clean the ball. 2. Replace the cable.

Troubleshooting area: Printer.

Problem Possible Cause Action Printer power is not on. 1. Power supply is not connected. 2. Bad cable or loose connection. 1. Connect or switch power on. 2. Check connection or change cable. 3. Check power point. Carriage does not move after power on. Loose connection. Check connection & if OK then call Hardware Engineer. Does not print during self test. Loose connection. Check connection & if OK then call Hardware Engineer.