Advanced Troubleshooting: Dell Dimension 9150 Service Manual
Screen retrace failure
No time tick
Shutdown failure
Gate A20 failure
Unexpected interrupt in protected mode
Serial or parallel port test failure 
Cache test failure
Message | Possible Cause | Corrective Action |
8042 Gate- | The keyboard controller failed | If you receive this message after you make |
A20 error | its test. | changes in the system setup program, enter |
|
| the system setup program and restore the |
|
| original value(s). |
Address Line Short!
C:Drive Error
C:Drive
Failure
Cache
Memory Bad,
Do Not
Enable
Cache
Error
An error in the address decoding circuitry in the memory has occurred.
The hard drive is not working or is not configured correctly.
The cache memory is not operating.
An error is occurring on the timer on the system board.
Reseat the memory modules.
Ensure that the drive is installed correctly in the computer and defined correctly in the system setup program.
See "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance.
See "Contacting Dell" in your 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
Diskette
Boot Failure
The system configuration information in the system setup program is incorrect or the battery charge may be low.
Drive A or B is present but has failed the BIOS POST.
Enter the system setup program, verify the system configuration, and then restart the computer.
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
FDD
Controller
Error in the DMA controller on | The keyboard or system board may need to be |
the system board. | replaced. |
The BIOS cannot | Ensure that the floppy drive or the hard drive is |
file:///T/htdocs/systems/dim9150/en/sm/adtshoot.htm[10/31/2012 7:59:03 AM]