User`s manual

65
Problem 8:
No screen.
Causes:
1. Memory problem.
2. Computer virus.
Solutions:
1. Reboot computer. Reinstall memory, make sure that all
memory modules are installed in correct sockets.
2. Use anti-virus programs to detect and clean viruses.
Problem 9:
Screen goes blank periodically.
Causes:
Screen saver is enabled.
Solutions:
Disable screen saver.
Problem 10:
Keyboard failure.
Causes:
Keyboard is disconnected.
Solutions:
Reconnect keyboard. Check keys again, if no improvement
replace keyboard.