Rebooting After A Lockup; Battery Operating Time - Compaq 1270 Maintenance & Service Manual

"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1270, 1670, and 1675

Rebooting After a Lockup

Occasionally you may encounter a frozen keyboard or a locked screen. To reboot your computer (as if from a cold
start) press and hold down the Power Button for at least four seconds, which will cause a manual shutdown. Then,
restart it with a single press of the Power Button. If it still doesn't recover, press the Power Button and hold it for
four seconds to shut it down, then, remove the battery or unplug the AC power for at least 30 seconds. Reinsert
the battery or reconnect AC power and press the Power Button once to reboot.

Battery Operating Time

Battery operating time is affected by variables, such as the following:
For more information on increasing battery pack operating time, conditioning the battery pack, and disposing of a
used battery pack, refer to the
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Power conservation settings
Hardware configuration
Software applications
Installed options
Display brightness
Hard drive usage
Power button
Changes in operating temperature
Type and number of installed PC Cards
Battery Pack Operations.