Acer Aspire V5-531 Acer Aspire V5-531 Notebook Service Guide - Page 180

Table 4-3. BIOS Beep Codes Code 69h Beeps POST Routine Description Setup System Management Mode (SMM) area 6Ah Display external L2 cache size 6Bh Load custom defaults (optional) 6Ch Display shadow-area message 6Eh Display possible high address for UMB recovery 70h Display error messages 72h Check for configuration errors 76h Check for keyboard errors 7Ch Set up hardware interrupt vectors 7Eh Initialize coprocessor if present 80h Disable onboard Super I/O ports and IRQs 81h Late POST device initialization 82h Detect and install external RS232 ports 83h Configure non-MCD IDE controllers 84h Detect and install external parallel ports 85h Initialize PC-compatible PnP ISA devices 86h Re-initialize onboard I/O ports 87h Configure Motherboard Configurable Devices (optional) 88h Initialize BIOS Area 89h Enable Non-Maskable Interrupts (NMIs) 8Ah Initialize Extended BIOS Data Area 8Bh Test and initialize PS/2 mouse 8Ch Initialize floppy controller 8Fh Determine number of ATA drives (optional) 90h Initialize hard-disk controllers 91h Initialize local-bus hard-disk controllers 92h Jump to UserPatch2 93h Build MPTABLE for multi-processor boards 95h Install CD ROM for boot 96h Clear huge ES segment register 97h Fixup Multi Processor table 98h 1-2 Search for option ROMs. One long, two short beeps on checksum failure. 4-22 Troubleshooting