Compaq XL280 - Manual (Page 34)

P RESARIO N OTEBOOK M AINTENANCE AND S ERVICE G UIDE 1800 S ERIES B ATTERY AND P OWER M ANAGEMENT 5
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Rebooting After a Lockup
To reboot the Notebook when the keyboard is frozen or the screen is locked, press and hold
down the Power ª button for at least four seconds; this causes the Notebook to shutdown.
Then, restart the Notebook with a single press of the Power ª button.
If the Notebook still does not recover, press the Power ª button and hold for four seconds
to shut it down, then remove the battery and unplug the AC power for at least 30 seconds.
Reinsert the battery or reconnect AC power and press the Power ª button once to reboot.
Recovering From a Loss of Electrical Power
Loss of electrical power causes the Notebook to turn off automatically. This may cause loss
of data because the Microsoft Windows operating system is not able to close all files and
programs properly.
Loss of power may be caused by one of the following:
•
Electrical power service is interrupted.
•
The power cord is accidentally disconnected.
If power surges or sags, the display and status lights may flicker, and the Notebook may
automatically restart. If an improper shutdown occurs, the Microsoft Windows utility
program, ScanDisk, runs automatically once power is restored. ScanDisk determines
whether the improper shutdown caused any errors on the hard disk. These errors may
occur if the Microsoft Windows operating system is not able to close all files properly before
the shutdown. If no errors are found, the restart process continues. If ScanDisk does
detect errors, follow the instructions on the screen to continue the restart process. Work
that was not saved before the loss of power or shutdown may be lost.
If a power failure occurs, or the power cord disconnects while the Notebook is turned on,
turn it off until normal service is restored. The next time the Notebook is turned on,
ScanDisk may run to check the hard disk for errors caused by improper shutdown.