h. Copy both the BIOS files
BIOS_CUR.rcv
and
BIOS_PRE.rcv
to the recovery folder on
Local Disk (E)
.
i.
In the
Command Prompt
window, at the
DISKPART
prompt, type
set id=DE
.
After the executing this command, the partition
Local Disk (E)
will not be accessible by the OS.
5. Shut the system down, remove the hard drive, and install the hard drive into the original system.
6. Start the system up and boot to System Setup, in the
Maintenance
section ensure that
BIOS Recovery from Hard Drive
is enabled in the
BIOS Recovery
section of the setup.
7. Press the power button to shut the system down.
8. Holding the
Ctrl and Esc
keys, press the power button to start the system up. Keep holding the
Ctrl and Esc
keys until the
BIOS Recovery Menu
page is displayed.
Ensure that the
Recover BIOS
radio button is selected and click
Continue
to start the BIOS recovery.
BIOS recovery using USB drive
About this task
NOTE:
Ensure that you have the file type extensions visible in the operating system.
NOTE:
Ensure that you have downloaded the latest BIOS from the Dell support site and save it on your system.
Steps
1. Browse to the location of the downloaded BIOS update executable (.exe) file.
2. Rename the file to BIOS_IMG.rcv.
For example, if the file name is PowerEdge_T30_0.0.5.exe, rename it to BIOS_IMG.rcv
3. Copy the BIOS_IMG.rcv file to the root directory of the USB key.
4. If not plugged in, plug in the USB drive, restart the system, press F2 to enter the System Setup, and then press power
button to shut down the system.
5. Start the system.
6. While the system is starting up, press the
Ctrl+Esc
keys while holding the power button until the
BIOS Recovery Menu
dialog box is displayed.
7. Click
Continue
to start the BIOS recovery process.
NOTE:
Ensure that the
Recovery BIOS
option is selected in the
BIOS Recovery Menu
dialog box.
8. Select the path on the USB drive where BIOS recovery file is stored( root directory or "\") and follow the on-screen
instructions.
M-BIST
M-BIST (Built In Self-Test) diagnostics tool, featuring improved accuracy in system board failures.
NOTE:
M-BIST can be manually initiated before POST (Power On Self Test).
How to run M-BIST
NOTE:
M-BIST must be initiated on the system from a power-off state either connected to AC power or with battery only.
1. Press and hold both the
M
key on the keyboard and the
power button
to initiate M-BIST.
2. With both the
M
key and the
power button
held down, the battery indicator LED may exhibit two states:
a. OFF: No fault detected with the system board
b. AMBER: Indicates a problem with the system board
94
Troubleshooting
Summary of Contents for Latitude 7520
Page 14: ...Major components of your system 1 Base cover 14 Removing and installing components ...
Page 18: ...About this task 18 Removing and installing components ...
Page 37: ...Figure 2 Display assembly with WLAN antenna Removing and installing components 37 ...
Page 38: ...Figure 3 Display assembly with WLAN and WWAN antenna 38 Removing and installing components ...
Page 43: ...Removing and installing components 43 ...
Page 61: ...Removing and installing components 61 ...
