Desktop BIOS instructions * Download/Save the BIOS file to the Windows desktop* Turn the Desktop PC off* Disconnect all external (USB drives, printer, headset, USB sound devices, etc.) peripheral devices from the Desktop. Disconnect the wireless keyboard and mouse USB transmitter. Go wired. Leaving only the following devices and cables connected =Power cableEthernet cable (if not using WiFi)Monitor video cableWired USB mouseWired USB keyboard* Turn the Desktop PC on* Close/end task all unnecessary software applications (Browsers, Dell SupportAssist, Dell Update Application, Dell Display Manager, Steam, Anti-virus, etc.)* Right click the saved BIOS file on the Windows desktop and choose, "Run as administrator". Note, you do not need to extract the file. Just run it* Follow the prompted instructions. The Desktop PC will reboot on its own. Do NOT force it to reboot or power off If the BIOS update stalls for longer than 1 hour, disconnect the power cable from the rear PSU. Wait 5 minutes. Reconnect the power cable to the PSU and try to power on.   Laptop BIOS installation instructions * Connect the external power adapter to the Laptop* The Laptop is not connected to any dock, external monitor, hard drive, printer, etc.* Download/Save the latest BIOS file to the Windows desktop* Close/end task all unnecessary software applications (Browsers, Dell SupportAssist, Dell Update Application, Dell Display Manager, Steam, Anti-virus, etc.)* Find the saved BIOS file on the Windows desktop* Right click the file and choose, "Run as administrator". Note, you do not need to "extract" the file. Just run it* Follow the prompted instructions. The Laptop will reboot on its own, do not force it If the BIOS update stalls for longer than 1 hour, try to power the Laptop off. If still no go, disconnect the power adapter, remove the base cover, disconnect the battery cable from the motherboard. Wait 5 minutes. Reconnect the battery cable to the motherboard, then reconnect the power adapter to the Laptop and try to power on.
Help what should I do? My computer is not working. It has been more than 12 hours with my computer screen with the message “Updating your Firmware. Do not power down your system” Flash Progress (with 0% progress). Should I unplug the power? Thanks in advance for your help. 
Desktop froze, updating firmware, do not power off