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Using System Restore
The Microsoft
®
Windows
®
XP operating system provides System Restore to allow you to return your computer to an earlier operating state (without affecting
data files) if changes to the hardware, software, or other system settings have left the computer in an undesirable operating state. See Windows Help for
information on using System Restore. To access Windows Help, see "Finding Help Information."
Creating a Restore Point
1. Click the Start button.
2. Click Help and Support.
3. Click System Restore.
4. Follow the instructions on the screen.
Restoring the Computer to an Earlier Operating State
If problems occur after installing a device driver, first try using Device Driver Rollback. If that is unsuccessful, then use System Restore.
Message
Possible Cause
Corrective Action
8042 Gate-A20 error
The keyboard controller failed its test.
If you receive this message after making changes in the system setup
program, enter the program and restore the original value(s).
Address Line Short!
Error in the address decoding circuitry in the
memory.
Reseat the memory modules.
C: Drive Error
C: Drive Failure
The hard drive is not working or is not configured
correctly.
Ensure that the drive is installed correctly in the computer and defined
correctly in the system setup program.
Cache Memory Bad, Do
Not Enable Cache
Cache memory is not operating.
See "Contacting Dell" in the Dell Owner's Manual for instructions on obtaining
technical assistance.
CH-2 Timer Error
An error is occurring on the timer on the system
board.
See "Contacting Dell" in the Dell Owner's Manual for instructions on obtaining
technical assistance.
CMOS Battery State
Low
CMOS Checksum Failure
CMOS System Options
Not Set
CMOS Display Type
Mismatch
CMOS Memory Size
Mismatch
CMOS Time and Date
Not Set
The system configuration information in the system
setup program is incorrect, or the battery charge
may be low.
Enter the system setup program and verify the system configuration; then
restart the computer.
Diskette Boot Failure
Drive A or B is present but has failed the BIOS POST.
Ensure that the drive is installed correctly in the computer and defined
correctly in the system setup program. Check the interface cable at both
ends.
DMA Error
DMA 1 Error
DMA 2 Error
Error in the DMA controller on the system board.
The keyboard or system board may need to be replaced.
FDD Controller
Failure
HDD Controller
Failure
BIOS cannot communicate with the floppy drive or
hard drive controller.
Ensure that the floppy drive or the hard drive is installed correctly in the
computer and defined correctly in the system setup program. Check the
interface cable at both ends.
INTR1 Error
INTR2 Error
Interrupt channel on the system board failed to
POST.
The keyboard or system board may need to be replaced.
Invalid Boot Diskette
The operating system cannot be located on drive A
or drive C.
Enter the system setup program and confirm that drive A or drive C is
properly identified.
Keyboard Error
The BIOS has detected a stuck key.
Make sure that nothing is resting on the keyboard; if a key appears to be
stuck, carefully pry it up. If the problem persists, you may need to replace
the keyboard.
KB/Interface Error
An error occurred with the keyboard connector.
Make sure that nothing is resting on the keyboard; if a key appears to be
stuck, carefully pry it up. If the problem persists, you may need to replace
the keyboard.
No ROM Basic
The operating system cannot be located on drive A
or drive C.
Enter the system setup program and confirm that drive A or drive C is
properly identified.
NOTICE: Make regular backups of your data files. System Restore does not monitor your data files or recover them.