- Notes, cautions, and warnings
- Working on your computer
- Major components of your system
- Technology and components
- Disassembly and reassembly
- System setup
- Troubleshooting
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Power-Supply Unit Built-in Self-Test
- Real-Time Clock (RTC Reset)
- System diagnostic lights
- Diagnostic error messages
- System error messages
- Recovering the operating system
- Updating the BIOS using the USB drive in Windows
- Updating the BIOS in Windows
- Backup media and recovery options
- Wi-Fi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell Technologies
Vostro 3681 Service Manual
Clearing CMOS settings/RTC reset
About this task
CAUTION:Clearing CMOS settings will reset the BIOS settings on your computer as well as reset the Real-Time Clock on your BIOS.
Steps
- Press and hold the power button for 30 seconds.
- Release the power button and allow the system to boot.
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