![Acer Altos G520 series Service Manual Download Page 80](http://html.mh-extra.com/html/acer/altos-g520-series/altos-g520-series_service-manual_5536080.webp)
71
Altos G520
POST Error Beep Codes
The following table lists the POST error beep codes. Prior to system video initialization, the BIOS uses these
beep codes to inform users of error conditions.
Number of Beeps
Description
1
Memory refresh timer error
2
Parity error in base memory (first 64KB block)
3
Base memory read / write test error
4
Motherboard timer not operational
5
Processor
error
6
8042 Gate A20 test error (cannot switch to protected mode)
7
General exception error (processor exception error)
8
Display memory error (system video adapter)
9
ROM checksum error
10
CMOS shutdown register read/write error
11
Cache memory test failed
Summary of Contents for Altos G520 series
Page 6: ...VI ...
Page 64: ...56 Chapter 2 ...