I've in our company a Dell 7548 Inspiron Notebook. In Windows the Dell Software notifies us that a BIOS Update is available and the software installs it. Now the the Notebook has a Black screen after powering on. The system seems to running but I don't get any screen. I asume the BIOS update was not successfully installed and now I want do recover it.
What I tried:
1. Removed AC Adapter and accu and proceed a power drain -> no success
2. I pressed F2 and/or F12 to go into the BIOS -> no success
3. I pressed "D"-Key and saw the display self test -> Self test seems to be ok -> Therefore I asume its no problem with the display