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system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its
factory state.
You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their
primary operating system due to software or hardware failures.
For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at
www.dell.com/serviceabilitytools. Click SupportAssist and then, click SupportAssist OS Recovery.
Real-Time Clock (RTC Reset)
The Real Time Clock (RTC) reset function allows you or the service technician to recover Dell systems from No POST/No
Power/No Boot situations. The legacy jumper enabled RTC reset has been retired on these models.
Start the RTC reset with the system powered off and connected to AC power. Press and hold the power button for 20 seconds.
The system RTC Reset occurs after you release the power button.
Battery status LED
Table 19. Battery status LED
Power Source
AC Adapter
AC Adapter
AC Adapter
Battery
Battery
Battery
● S0 (ON) — System is turned on.
● S4— The system consumes the least power compared to all other sleep states. The system is almost at an OFF state,
expect for a trickle power. The context data is written to hard drive.
● S5 (OFF) — The system is in a shutdown state.
Backup media and recovery options
It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes
multiple options for recovering Windows operating system on your Dell PC. For more information. see
Media and Recovery
Options.
WiFi power cycle
If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be
performed. The following procedure provides the instructions on how to conduct a WiFi power cycle:
NOTE:
Some ISPs (Internet Service Providers) provide a modem/router combo device.
1. Turn off your computer.
2. Turn off the modem.
3. Turn off the wireless router.
4. Wait for 30 seconds.
5. Turn on the wireless router.
6. Turn on the modem.
7. Turn on your computer.
LED behavior
Solid White
Solid White
Off
Amber
Off
Off
System Power State
S0
S4/S5
S4/S5
S0
S0
S4/S5
Battery Charge Level
0-100%
< Fully Charged
Fully Charged
< = 10%
> 10%
0-100%
Dell Windows Backup
Troubleshooting
119
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