Updating the BIOS using the USB drive in Windows.........................................................................................118
Updating the BIOS from the F12 One-Time boot menu....................................................................................119
System and setup password......................................................................................................................................... 120
Assigning a System Setup password.................................................................................................................... 120
Deleting or changing an existing system setup password............................................................................... 120
Clearing CMOS settings................................................................................................................................................. 121
Clearing BIOS (System Setup) and System passwords..........................................................................................121
Chapter 9: Troubleshooting....................................................................................................... 122
Handling swollen rechargeable Li-ion batteries........................................................................................................ 122
Locate the Service Tag or Express Service Code of your Dell computer ........................................................ 122
Dell SupportAssist Pre-boot System Performance Check diagnostics.............................................................. 123
Running the SupportAssist Pre-Boot System Performance Check.............................................................. 123
Built-in self-test (BIST)..................................................................................................................................................123
M-BIST......................................................................................................................................................................... 123
LCD Power rail test (L-BIST)..................................................................................................................................124
LCD Built-in Self-Test (BIST)................................................................................................................................. 124
System-diagnostic lights................................................................................................................................................125
Recovering the operating system................................................................................................................................125
Real-Time Clock (RTC Reset)...................................................................................................................................... 126
Backup media and recovery options........................................................................................................................... 126
Wi-Fi power cycle............................................................................................................................................................126
Drain residual flea power (perform hard reset)........................................................................................................126
Chapter 10: Getting help and contacting Dell............................................................................. 128
6
Contents
To Next Page
Loading...
