HP pavilion n5400 Manuale Di Servizio

 

Solving Problems with Your Computer 

 Troubleshooting 

Techniques 

  

Reference 

Guide 

99 

Modem problems 

If the modem seems slow 

•  Check for excess static or noise on the line, which reduces the overall transmission 

speed. If necessary, contact your telephone company about fixing this type of 
problem.  

•  If you’re dialing internationally, line noise is often difficult or impossible to 

eliminate. 

•  If you have call-waiting, disable it—your telephone company can provide 

instructions. Call waiting can cause symptoms similar to static. 

•  Eliminate extra connections in the line. If possible, connect directly to the wall jack. 
•  Try another telephone line, preferably one normally used for a fax machine or 

modem. 

If the modem doesn’t dial or no dial tone is detected 

•  Check all cables and connections. 
•  Connect a standard telephone to the phone line and make sure the line is working. 
•  Make sure someone else isn’t using the same phone line. 
•  Try another telephone line, preferably one normally used for a fax machine or 

modem. 

•  If you’re in a foreign country, the dial tone may not be recognized by the modem. In 

Control Panel, open Phone and Modem Options, and try disabling the option that 
waits for a dial tone. 

If the modem dials incorrectly 

•  Check the telephone number you entered, including any digits required for outside 

access or long distance. 

•  In Control Panel, open Phone and Modem Options. Check the dialing options—look 

for duplicate digits for outside access or long distance. 

•  Make sure the number you’re calling isn’t busy. 
•  If you’re in a foreign country, the dial tone may not be recognized by the modem. In 

Control Panel, open Phone and Modem Options, and try disabling the option that 
waits for a dial tone.