
Solved!
Go to SolutionFirmware update utility for DBC Disabled & Enabled disabled.
Accidentally chose the diable option after downloading this driver on xps 15 9550.
now the laptop screeen doesnot light up.
how to re-enable it?
1 person also has this problem
Responses (6)
Solutions (0)
Jesse L (retired)
10 Wizard
•
17898 Posts
•
69016 Points
2518
0
Posted December 12th, 2016 10:00
kamla4493,
You can click the link below for information on recoverying the bios.
Jesse L (retired)
Jesse L (retired)
10 Wizard
•
17898 Posts
•
69016 Points
2518
0
Posted December 13th, 2016 06:00
kamal4493.
If you can see the bios and windows using an external monitor via HDMI, then you can reset the bios there. Using the external monitor to see the windows desktop, why not simply run the file again and choose Enable instead of Disable?
http://dell.to/2hAAsutJesse L (retired)

Jesse L (retired)
10 Wizard
•
17898 Posts
•
69016 Points
2518
0
Posted December 14th, 2016 10:00
kamal4493,
To verify that this file (Enable/Disable) is not driven by the operating system, see if it will boot into safemode.
If you cannot, then the switch must have been made on a bios level, not an operating system level.
If the file cannot be re-run because it senses that it is already installed,
By mistakenly choosing disable, the LCD panel is broken and will need to be replaced. This is not covered under warranty unless you have the Complete Care Warranty.
Jesse L (retired)