Acer Altos R700 Series - Manual (Page 123)

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Bootblock Error Beep Codes
Bootblock Error Beep Codes:
Beeps Error message Description
1 Refresh timer failure The memory refresh circuitry on the
motherboard is faulty.
2 Parity error Parity can not be reset.
3 Base memory failure Base memory test failure. **See "3-
Beep-Boot Block Failure Error Code"
table for additional error details.
4 System timer System timer is not operational.
5 Processor failure Processor failure detected.
6 Keyboard controller
Gate A20 failure The keyboard controller may be bad.
The BIOS cannot switch to protected
mode.
7 Processor exception
interrupt error The CPU generated an exception
interrupt.
8 Display memory read/
write error The system video adapter is either
missing or its memory is faulty. This is
not a fatal error.
9 ROM checksum error System BIOS ROM checksum error.
10 Shutdown register
error Shutdown CMOS register read/write
error detected.
11 Invalid BIOS General BIOS ROM error.
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