Dell EMC Latitude 7520 - Page 5

Chapter 5: Troubleshooting.........................................................................................................89
Recovering the operating system................................................................................................................................. 89
Backup media and recovery options.............................................................................................................................89
Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................89
Running the SupportAssist Pre-Boot System Performance Check................................................................90
Diagnostic LED behavior................................................................................................................................................. 90
Real-Time Clock (RTC Reset)........................................................................................................................................ 91
Flashing BIOS (USB key).................................................................................................................................................92
Flashing the BIOS..............................................................................................................................................................92
WiFi power cycle............................................................................................................................................................... 92
BIOS recovery.................................................................................................................................................................... 93
BIOS recovery using hard drive............................................................................................................................... 93
BIOS recovery using USB drive............................................................................................................................... 94
M-BIST.................................................................................................................................................................................94
LCD Built-in Self Test (BIST).........................................................................................................................................95
Chapter 6: Getting help...............................................................................................................96
Contacting Dell.................................................................................................................................................................. 96
Contents
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