Computer frozen

If your issue was not resolved by now, you can force power off the system and HOPE for a system self recovery from a failed firmware update.  Otherwise, the machine is bricked and will required to perform a system BIOS recovery. 

Dell systems built from 2015 and later have the options to recover BIOS firmware must they failed to boot.

How to recover the BIOS on a Dell computer.

Always include exact PC model and version of Windows in your posts.

How did you run the BIOS update, using SupportAssist/Dell Update, manually inside Windows, via Windows Update, or using the F12 menu Flash Update option?

Device has been frozen due to 60 days plus of inactivity. How do I resolve it ?

@Veve Ad​  - You have to provide more details:

1. Exact PC model
2. Version of Windows
3. Exactly what does "frozen" mean? 
4. Does PC power on and is power button steady or blinking, and what color?
5. Do you see any error message(s)
6. Etc