Acer Aspire TC-780 Service Manual page 95

Memory
Message
Gate20 Error
Multi-Bit ECC Error
Parity Error
RAM R/W test failed
CMOS Memory Size
Wrong
Boot
Message
Boot Failure...
Invalid Boot Diskette
Drive Not Ready
A: Drive Error
B: Drive Error
Insert BOOT diskette
in A:
Reboot and select
proper boot device or
Insert boot media in
selected boot device
NO ROM BASIC
Storage Device
Message
Primary Master Hard
Disk Error
Primary Slave Hard
Disk Error
Secondary Master
Hard Disk Error
Aspire TC-780 Desktop Computer Service Guide
Description
The BIOS is unable to properly control the mainboard's Gate A20 function, which
controls access of memory over 1 MB. This may indicate a problem with the
mainboard.
This message will only occur on systems using ECC enabled memory modules.
ECC memory has the ability to correct single-bit errors that may occur from faulty
memory modules.
A multiple bit corruption of memory has occurred, and the ECC memory algorithm
cannot correct it. This may indicate a defective memory module.
Fatal Memory Parity Error. System halts after displaying this message.
This message is displayed by the AMIBIOS8 when the RAM read/write test fails.
The base memory (memory below 1MB) size that is reported in the CMOS (offset
15h) mismatches with the actual size detected. This condition may occur when the
hole is set at 512K base memory or when CMOS is corrupted.
Description
This is a generic message indicating the BIOS could not boot from a particular
device. This message is usually followed by other information concerning the
device.
A diskette was found in the drive, but it is not configured as a bootable diskette.
The BIOS was unable to access the drive because it indicated it was not ready for
data transfer. This is often reported by drives when no media is present.
The BIOS attempted to configure the A: drive during POST, but was unable to
properly configure the device. This may be due to a bad cable or faulty diskette
drive.
The BIOS attempted to configure the B: drive during POST, but was unable to
properly configure the device. This may be due to a bad cable or faulty diskette
drive.
The BIOS attempted to boot from the A: drive, but could not find a proper boot
diskette.
Reboot and Select proper Boot device or Insert Boot Media in selected Boot device
BIOS could not find a bootable device in the system and/or removable media drive
does not contain media.
BIOS could not find a bootable device in the system and/or removable
media drive does not contain media.
This message occurs on some systems when no bootable device can be detected.
Description
The IDE/ATAPI device configured as Primary Master could not be properly
initialized by the BIOS. This message is typically displayed when the BIOS is trying
to detect and configure IDE/ATAPI devices in POST.
The IDE/ATAPI device configured as Primary Slave could not be properly initialized
by the BIOS. This message is typically displayed when the BIOS is trying to detect
and configure IDE/ATAPI devices in POST.
The IDE/ATAPI device configured as Secondary Master could not be properly
initialized by the BIOS. This message is typically displayed when the BIOS is trying
to detect and configure IDE/ATAPI devices in POST.
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