Service Manual
Off
• Power adapter is connected and the battery is fully charged.
• Computer is running on battery and the battery has more than 5 percent charge.
• Computer is in sleep state, hibernation, or turned off.
The power and battery-status light blinks amber along with beep codes indicating failures.
For example, the power and battery-status light blinks amber two times followed by a pause, and then blinks white three times followed by
a pause. This 2,3 pattern continues until the computer is turned off indicating no memory or RAM is detected.
The following table shows different power and battery-status light patterns and associated problems.
Table 15. Diagnostics
Light pattern Problem description
2,1 CPU failure
2,2 System board: BIOS and ROM failure
2,3 No memory or RAM detected
2,4 Memory or RAM failure
2,5 Invalid memory installed
2,6 System board or chipset error
2,7 LCD failure
3,1 CMOS battery failure
3,2 PCI or video card or chip failure
3,3 Recovery image not found
3,4 Recovery image found but invalid
4,1 AC adapter connected but battery switch is OFF
Camera status light: Indicates whether the camera is in use.
• Solid white—Camera is in use.
• Off—Camera is not in use.
Caps Lock status light: Indicates whether Caps Lock is enabled or disabled.
• Solid white—Caps Lock enabled.
• Off—Caps Lock disabled.
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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.
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