Dell Vostro 3578 Vostro 15-3578 Owners Manual - Page 81
Real Time Clock reset
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The system will not shutdown when displaying the Diagnostic Error Codes. Diagnostic Error Codes will always supersede any other use of the LED. For instance, on Notebooks, battery codes for Low Battery or Battery Failure situations will not be displayed when Diagnostic Error Codes are being displayed: Table 33. LED pattern Blinking pattern Problem Description Amber White 2 1 processor 2 2 system board, BIOS ROM 2 3 memory 2 4 memory 2 5 memory 2 6 system board; chipset 2 7 display 3 1 RTC power failure 3 2 PCI/Video 3 3 BIOS recovery 1 3 4 BIOS recovery 2 Real Time Clock reset Suggested Resolution processor failure system board, covers BIOS corruption or ROM error no memory/no RAM detected memory failure/RAM failure invalid memory installed system board/ chipset error display failure coin-cell battery failure PCI/Video card/chip failure recovery image nor found recovery image found but invalid The Real Time Clock (RTC) reset function allows you or the service technician to recover the recently launched model Dell Latitude and Precision systems from select No POST/No Boot/No Power situations. You can initiate the RTC reset on the system from a power off state only if it is connected to AC power. Press and hold the power button for 25 seconds. The system RTC reset occurs after you release the power button. NOTE: If AC power is disconnected from the system during the process or the power button is held longer than 40 seconds, the RTC reset process is aborted. The RTC reset will reset the BIOS to Defaults, un-provision Intel vPro and reset the system date and time. The following items are unaffected by the RTC reset: • Service Tag • Asset Tag • Ownership Tag • Admin Password • System Password • HDD Password • Key Databases • System Logs The following items may or may not reset based on your custom BIOS setting selections: • The Boot List • Enable Legacy OROMs • Secure Boot Enable Troubleshooting 81