Serial, Parallel, And Usb Problems - HP Compaq Presario,Presario 2100 Reference Manual

Troubleshooting and Maintenance
Troubleshooting Your Notebook

Serial, parallel, and USB problems

If a serial mouse doesn't work
Make sure you followed the manufacturer's installation instructions completely
and have installed the mouse properly. If not, repeat the procedure.
Make sure the port connection is secure.
Restart the notebook. Select Start > Turn Off Computer > Restart.
Check mouse settings in Control Panel. Select Start > Control Panel > Printers
and Other Hardware > Mouse.
Use a mouse that connects to the USB or PS/2 port. If you have a PS/2 keyboard
connected, use a PS/2 Y adapter.
Check the port settings in Control Panel. Open the hardware Device Manager,
and then double-click Ports (COM & LPT).
If a serial modem doesn't work properly
Make sure the port connection is secure.
Use the Modem troubleshooter in Windows Help. Select Start > Help and
Support.
In Control Panel, open Phone and Modem Options, and check the modem
settings.
Disable the internal modem:
1. Open the hardware Device Manager. Select Start > Control Panel >
Performance and Maintenance > System.
2. Double-click Modem to list the current modem devices.
3. Double-click the internal modem, and then select the option to disable the
modem.
Check the port settings in Control Panel. Open the hardware Device Manager,
and then double-click Ports (COM & LPT).
If the serial or parallel port is not working
Make sure the port connection is secure.
Check the port settings in Control Panel. Open the hardware Device Manager,
and then double-click Ports (COM & LPT).
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