Dell Vostro 3478 Vostro 14-3478 Owners Manual - Page 73

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 34. LED pattern Blinking pattern Problem Description Ambe White r Suggested Resolution 2 1 processor processor failure 2 2 system board, BIOS ROM system board, covers BIOS corruption or ROM error 2 3 memory no memory/no RAM detected 2 4 memory memory failure/RAM failure 2 5 memory invalid memory installed 2 6 system board; chipset system board/ chipset error 2 7 display display failure 3 1 RTC power failure coin-cell battery failure 3 2 PCI/Video PCI/Video card/chip failure 3 3 BIOS recovery 1 recovery image nor found 3 4 BIOS recovery 2 recovery image found but invalid Real Time Clock reset The Real Time Clock (RTC) reset function allows you to recover your Dell system from No POST/No Boot/No Power situations. To initiate the RTC reset on the system make sure system is in a power-off state and is connected to power source . Press and hold the power button for 25 seconds and then release the power button. Go to how to reset real time clock. 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 • TPM on and Active • 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 • Allow BIOS Downgrade Troubleshooting 73

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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 34. LED pattern
Blinking pattern
Problem Description
Suggested Resolution
Ambe
r
White
2
1
processor
processor failure
2
2
system board, BIOS ROM
system board, covers BIOS corruption or ROM error
2
3
memory
no memory/no RAM detected
2
4
memory
memory failure/RAM failure
2
5
memory
invalid memory installed
2
6
system board; chipset
system board/ chipset error
2
7
display
display failure
3
1
RTC power failure
coin-cell battery failure
3
2
PCI/Video
PCI/Video card/chip failure
3
3
BIOS recovery 1
recovery image nor found
3
4
BIOS recovery 2
recovery image found but invalid
Real Time Clock reset
The Real Time Clock (RTC) reset function allows you to recover your Dell system from
No POST/No Boot/No Power
situations. To
initiate the RTC reset on the system make sure system is in a power-off state and is connected to power source . Press and hold the
power button for 25 seconds and then release the power button. Go to
how to reset real time clock
.
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
•
TPM on and Active
•
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
•
Allow BIOS Downgrade
Troubleshooting
73