Dell XPS 15 9570 XPS 15 Service Manual - Page 89

Clearing BIOS (System Setup) and System passwords, Clearing CMOS settings, Real Time Clock (RTC)

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3 Select System Password, alter or delete the existing system password and press Enter or Tab. 4 Select Setup Password, alter or delete the existing setup password and press Enter or Tab. NOTE: If you change the System and/or Setup password, re-enter the new password when prompted. If you delete the System and/or Setup password, confirm the deletion when prompted. 5 Press Esc and a message prompts you to save the changes. 6 Press Y to save the changes and exit from System Setup. The computer reboot. Clearing BIOS (System Setup) and System passwords Contact Dell technical support to clear the forgotten passwords. For more information, see www.dell.com/contactdell. Clearing CMOS settings 1 Remove the base cover. 2 Remove the battery (half-length) or the battery (full-length). 3 Remove the coin-cell battery. 4 Wait for one minute. 5 Replace the coin-cell battery. 6 Replace the battery (half-length) or the battery (full-length). 7 Replace the base cover. Real Time Clock (RTC) battery reset Press and hold the power button for 25 seconds to force Real Time Clock (RTC) battery reset. Flashing BIOS (USB key) 1 Follow the procedure from step 1 to step 7 in "Flashing the BIOS" to download the latest BIOS setup program file. 2 Create a bootable USB drive. For more information see the knowledge base article SLN143196 at www.dell.com/support. 3 Copy the BIOS setup program file to the bootable USB drive. 4 Connect the bootable USB drive to the computer that needs the BIOS update. 5 Restart the computer and press F12 when the Dell logo is displayed on the screen. 6 Boot to the USB drive from the One Time Boot Menu. 7 Type the BIOS setup program filename and press Enter. 8 The BIOS Update Utility appears. Follow the instructions on the screen to complete the BIOS update. System and setup password 89

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3
Select
System Password
, alter or delete the existing system password and press Enter or Tab.
4
Select
Setup Password
, alter or delete the existing setup password and press Enter or Tab.
NOTE:
If you change the System and/or Setup password, re-enter the new password when prompted. If you delete the
System and/or Setup password,
confirm
the deletion when prompted.
5
Press Esc and a message prompts you to save the changes.
6
Press Y to save the changes and exit from System Setup.
The computer reboot.
Clearing BIOS (System Setup) and System passwords
Contact Dell technical support to clear the forgotten passwords. For more information, see
www.dell.com/contactdell
.
Clearing CMOS settings
1
Remove the
base cover
.
2
Remove the
battery (half-length)
or the
battery (full-length)
.
3
Remove the
coin-cell battery
.
4
Wait for one minute.
5
Replace the
coin-cell battery
.
6
Replace the
battery (half-length)
or the
battery (full-length)
.
7
Replace the
base cover
.
Real Time Clock (RTC) battery reset
Press and hold the power button for 25 seconds to force Real Time Clock (RTC) battery reset.
Flashing BIOS (USB key)
1
Follow the procedure from step 1 to step 7 in "
Flashing the BIOS
" to download the latest BIOS setup program
file.
2
Create a bootable USB drive. For more information see the knowledge base article
SLN143196
at
www.dell.com/support
.
3
Copy the BIOS setup program
file
to the bootable USB drive.
4
Connect the bootable USB drive to the computer that needs the BIOS update.
5
Restart the computer and press
F12
when the Dell logo is displayed on the screen.
6
Boot to the USB drive from the
One Time Boot Menu
.
7
Type the BIOS setup program
filename
and press
Enter
.
8
The
BIOS Update Utility
appears. Follow the instructions on the screen to complete the BIOS update.
System and setup password
89