Dell Vostro 2421 Owner's Manual
Page 46
..., called beep codes, identify various problems. The delay between each beep is 300 ms, the delay between each set of beeps is attached to your laptop. Battery in progress or failure System board failure, covers BIOS corruption or ROM error 2 No RAM detected No memory detected 3 Chipset Error (North and... failure 5 Real-time clock power fail CMOS battery failure 46 Turns on when the numeric keypad is enabled. Turns on An unauthenticated or unsupported non-Dell AC adapter is 3 seconds, and the beep sound lasts 300 ms. After each beep and each set of beeps, the BIOS should detect if...
..., called beep codes, identify various problems. The delay between each beep is 300 ms, the delay between each set of beeps is attached to your laptop. Battery in progress or failure System board failure, covers BIOS corruption or ROM error 2 No RAM detected No memory detected 3 Chipset Error (North and... failure 5 Real-time clock power fail CMOS battery failure 46 Turns on when the numeric keypad is enabled. Turns on An unauthenticated or unsupported non-Dell AC adapter is 3 seconds, and the beep sound lasts 300 ms. After each beep and each set of beeps, the BIOS should detect if...