Toshiba portege m400 Manual De Usuario

9-4

User’s Manual

Troubleshooting

Self test 

When the computer starts up, the self test will be run automatically, and the 
following will be displayed:

This message remains on the screen for a few seconds.

If the self test is successful, the computer tries to load the operating 
system, depending on how the Boot Priority is set in the TOSHIBA HW 
Setup program.

If any of the following conditions are present, the self test failed:

■

The computer stops and does not proceed to display information or 
messages except the TOSHIBA logo.

■

Random characters appear on the screen, and the system does not 
function normally.

■

The screen displays an error message.

Turn off the computer and check all cable connections. If the test fails 
again, contact your dealer.

Power 

When the computer is not plugged into an AC outlet, the battery pack is the 
primary power source. However, your computer has a number of other 
power resources, including an intelligent power supply and a Real Time 
Clock battery. These resources are interrelated and any one could affect 
apparent power problems. This section provides checklists for AC power 
and the battery. If you cannot resolve a problem after following them, the 
cause could lie with another power resource. In such case, contact your 
dealer.

If the computer’s internal temperature becomes too high, the computer will 
automatically enter Hibernation or Sleep Mode and shut down.

S

Computer shuts down 
and DC IN indicator 
blinks orange 

Leave the computer off until the DC IN indicator 
stops blinking.

It is recommended to leave the computer off until the interior reaches room 
temperature even though the DC IN indicator stops blinking.