Dell Latitude 3490 Owners Manual - Page 100

Testing memory using ePSA, Real Time Clock reset

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Testing memory using ePSA 1 Turn on or restart your system. 2 Perform one of the following actions after the Dell logo is displayed: • With keyboard - Press F12. The PreBoot System Assessment (PSA) starts on your system. NOTE: If you wait too long and the operating system logo appears, continue to wait until you see the desktop. Turn off the laptop and try again. 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 100 Troubleshooting

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Testing memory using ePSA
1
Turn on or restart your system.
2
Perform one of the following actions after the Dell logo is displayed:
•
With keyboard — Press
F12
.
The PreBoot System Assessment (PSA) starts on your system.
NOTE:
If you wait too long and the operating system logo appears, continue to wait until you see the desktop. Turn
off
the laptop and try again.
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
100
Troubleshooting