Acer Altos G520 series - Manual (Page 128)

4 BIOS setup 118
BIOS Recovery Beep Codes
An error or warning condition at boot can result in a series of beeps
being issued known as "beep codes.” These beeps have a code that
identifies system or PCI card events. For example, some Acer RAID cards
have beep codes. Before checking for a system beep code error make
sure the PCI card is not causing the beeping.
Beeps Reason
1 One long beep - video is active.
1-2 One long beep and two short beeps: Insert the BIOS recovery
diskette.
BB!H631!.!FO/cppl!!Qbhf!229!!Uvftebz-!Bvhvtu!28-!3115!!5;13!QN