Troubleshooting and Maintenance Guide

18 Troubleshooting and Maintenance Guide
Computer will not turn on
or start.
(continued)
Incompatible memory (RAM) may have been installed. Reinstall the old
memory to return your computer to its original state. Refer to the Upgrading
and Servicing Guide for instructions.
Reseat the hard disk drive’s data and power cables. See the Upgrading and
Servicing Guide for instructions.
Invalid system disk or
Non-System disk or disk error
message displays.
When drive activity stops, remove the disk and press the spacebar. The
computer should start up.
Computer does not turn off
when the On button is
pressed.
Press and hold the On button until the computer turns off.
Computer shuts down
automatically.
The computer may be in an exceedingly hot environment. Let it cool down.
Ensure computer air vents are not blocked and internal fan is running. Note
that your computer may not have an internal fan.
Computer date and time
display is incorrect.
The real-time clock (RTC) battery may need to be replaced. Battery life is
approximately seven years.
Before replacing the battery, try resetting the date and time in your operating
system by using the Control Panel. If the problem persists, replace the battery.
See the Upgrading and Servicing Guide for instructions on replacing the
battery.
Power (continued)
Symptom Possible solution
Performance
Symptom Possible solution
Applications and files take
longer to open or respond.
If you created multiple user accounts on your computer, make sure other users
are not logged in. If there are multiple users logged in at one time, system
resources must be shared among the multiple users.
Run the Disk Cleanup program to delete unwanted files (including temporary
Internet files, installed components and programs that you no longer use, and
files in the Recycle Bin) from your hard disk drive:
1 Click the Windows Start Button, All Programs, Accessories,
System Tools, and then click Disk Cleanup.
2 Select the drive on which you want to perform the cleanup.
3 Choose the files to delete by placing a check mark in the check box next to
the file types listed.
4 Click OK, and then click Yes to permanently delete the files.