Cant access bios menu, cant reset bios

Question

So, I was updating my bios but for some reason my laptop suddenly turned off.

Now when I try to turn on my laptop, I can only see the dell logo. I have been trying everything to access the BIOS menu, like pressing CTRL + ESQ then connecting the power cord, pressing F12, F2, but nothing happens. The only response I receive from the laptop, is that when I press ESQ + CTRL and I connect the power cord, I turn on without me having to press the power button.

I also had tried to remove battery and coin while pressing the on button for 15 minutes, I also had tried to turn on the laptop without the SSD and nothing.

Have I hard bricked my laptop?

Please help me to recover from this disaster.

I got a latitude 7400 2 in 2

crimsom · Answer

Hi @EuclidesG123 Dell's Product Support did not find Latitude 7400 2-in-2, but did find Latitude 7400 2-in-1.

Unless there are additional features that you want, never update BIOS just because there is a new BIOS version update (1.18.0). There are very specific installation instructions to install a new BIOS file: download file onto your laptop, verify file checksum value, plug-in powered-on ac adapter, make sure main battery has more that 20% of charge, CMOS (coin-cell) BIOS battery works, etc. When installing new BIOS file, all keyboard functions are disabled, loss of power during BIOS installation can brick the laptop.

Please install all the internal parts that have been removed. Remove all external connections to laptop, but keep the powered on ac adapter plugged into the laptop's dc-in port. Press and hold down the Fn key, press the power-on button, wait for ePSA Diagnostics to start before releasing the Fn key. ePSA Pre Boot System Assessment Dell Overview (Official Dell Tech Support) - UPDATED - YouTube Please enable ePSA option to post copy of test results to be installed on the OS(C:) boot drive.

Please share the test result of the ePSA Diagnostics (it does not test everything). For your own protection, never share your private System Service Tag or Express Service Code in this public forum.

XPS_Man · Answer

Since you have not listed the complete model number I can not confirm if your model supports Dell BIOS recovery or not. Dell saves a little partition in your hard drive with which you can recover bios. In most cases users have formatted the hard drive atleast once so this partition is no longer available.

Please review the link below and use Option 2 USB

https://www.dell.com/support/kbdoc/en-us/000132453/how-to-recover-the-bios-on-a-dell-computer-or-tablet#:~:text=Release%20the%20CTRL%20%2B%20ESC%20key%20on%20the%20keyboard.,to%20start%20the%20recovery%20process.

If you can't even boot to BIOS recovery menu than bro you need a new system board.

EuclidesG123 · Answer

I tried this, but i cant pass the dell logo screen. The strange thing is that when I press ESQ + CTRL while connecting the DC cord, the laptop turn himself on, without me having to press the Power On button. So, this means that the keyboard is receiving the input. Any other way i could enter this screen?

EuclidesG123 · Answer

Hi

To the best of my knowledge i haven't formatted my hard drive.

I tried the option 2, but i cant pass the dell logo screen. The strange thing is that when I press ESQ + CTRL while connecting the DC cord, the laptop turn himself on, without me having to press the Power On button. So, this means that the keyboard is receiving the input.

Im loosing hope

XPS_Man · Answer

Its supposed to do that, this feature is added to initiate the bios recovery screen.  sorry bro you seem to have hard bricked your machine. During BIOS update machine shouldn't be powered off.

crimsom · Answer

Hi @EuclidesG123 keep holding down the ESQ + CTRL key combination and then connect the DC cord, this should open BIOS Recovery page. Select Recover BIOS and press the Enter key to start the recovery process. How to Recover the BIOS on a Dell Computer or Tablet | Dell UK

Please try removing the CMOS (Coin Cell) battery to remove the stored BIOS settings. Dell Latitude 7400 2-in-1, Real-Time Clock (RTC Reset)

It should be possible to How to flash the BIOS on a Dell Desktop or Notebook with a USB thumb drive | Dell UK

If under Dell warranty, visit your online Dell account and create Service Request to get BIOS repair.

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Cant access bios menu, cant reset bios

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