Aspire 4315 / 4715Z Service Guide
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... switch for more than 4 seconds. T Run "Load Setup Defaults" in sequence T Power source (battery pack and power adapter). Check or do the following in sequence T Audio driver T Speaker T Mainboard T Speaker T Mainboard Power Management-Related Symptoms Symptom / Error Check or do the following in sequence Memory count (size) appears different from actual size...
... switch for more than 4 seconds. T Run "Load Setup Defaults" in sequence T Power source (battery pack and power adapter). Check or do the following in sequence T Audio driver T Speaker T Mainboard T Speaker T Mainboard Power Management-Related Symptoms Symptom / Error Check or do the following in sequence Memory count (size) appears different from actual size...