Aspire 5220/5520/5520G Service Guide
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...Symptoms Symptom / Error The system will not enter hibernation The system doesn't enter hibernation mode and four short beeps every minute. Audio driver Speaker System board Speaker System board Action in Sequence Enter BIOS Setup Utility to Disk (S4)" on page 45. LCD cover switch ...System board Chapter 4 100 DIMM System board Speaker-Related Symptoms Symptom / Error In Windows, multimedia programs, no sound. The system doesn't resume from standby mode after closing the LCD The system doesn't resume from the keyboard) Hard disk drive System board ...
...Symptoms Symptom / Error The system will not enter hibernation The system doesn't enter hibernation mode and four short beeps every minute. Audio driver Speaker System board Speaker System board Action in Sequence Enter BIOS Setup Utility to Disk (S4)" on page 45. LCD cover switch ...System board Chapter 4 100 DIMM System board Speaker-Related Symptoms Symptom / Error In Windows, multimedia programs, no sound. The system doesn't resume from standby mode after closing the LCD The system doesn't resume from the keyboard) Hard disk drive System board ...