- Notes, cautions, and warnings
- Working on your computer
- Removing and installing components
- Technology and components
- Troubleshooting your computer
- System Setup
- System Setup
Options
- System Setup overview
- Accessing System Setup
- System setup
options
- General screen options
- System configuration screen options
- System Configuration screen options
- Security screen options
- Secure boot screen options
- Intel Software Guard Extensions options
- Performance screen options
- Power management screen options
- POST behavior screen options
- Virtualization support screen options
- Maintenance screen options
- System Log screen options
- SupportAssist System Resolution options
- Technical specifications
- Contacting Dell
Dell Vostro 3660/3669 Owner's Manual
Diagnostics
The computer POST (Power On Self Test) ensures that it meets the basic computer requirements and the hardware is working appropriately before the boot process begins. If the computer passes the POST, the computer continues to start in a normal mode. However, if the computer fails the POST, the computer emits a series of LED codes during the start-up. The system LED is integrated on the Power button.
The following table shows different light patterns and what they indicate.
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