Troubleshoot Keyboard is not working in BIOS

[nishaddesilva]

I have a Dell Inspiron 3521 laptop. I can access the BIOS using F2 during boot. But inside BIOS I can't change any setting as the keyboard doesn't seem to type. The CPU fan seems to rotate fast inside BIOS. Please help.

 

[Amelith Nargothrond]

Do you have access to an external usb keyboard, just to make sure it's the keyboard?

 

[nishaddesilva]

I have an external keyboard plugged in. Neither works after getting into BIOS.

 

[Amelith Nargothrond]

I would try to reset/update your BIOS as a first step:

1. Detach all your devices from the laptop
2. If Windows loads, download the BIOS version for your laptop from DELL (use a serial number or product code from the bottom of your laptop to help Dell identify your exact model)
3. Disable all your security software's realtime protections, including Windows Defender
4. Close all your running apps, save your work
5. Update BIOS - do this with the battery in place and charged at least 50% (if 50% means keeping your laptop alive under heavy load for at least 15-20 mins - it won't take that long, just to be sure)
6. Wait for the message that says you can safely reboot (or wait for it to reboot by itself)
7. Check again

For a first step, try this. If it doesn't work, we'll try something else.

 

[nishaddesilva]

I would try to reset/update your BIOS as a first step:

1. Detach all your devices from the laptop
2. If Windows loads, download the BIOS version for your laptop from DELL (use a serial number or product code from the bottom of your laptop to help Dell identify your exact model)
3. Disable all your security software's realtime protections, including Windows Defender
4. Close all your running apps, save your work
5. Update BIOS - do this with the battery in place and charged at least 50% (if 50% means keeping your laptop alive under heavy load for at least 15-20 mins - it won't take that long, just to be sure)
6. Wait for the message that says you can safely reboot (or wait for it to reboot by itself)
7. Check again

For a first step, try this. If it doesn't work, we'll try something else.

Well the other problem is the laptop doesn't power on with the battery plugged in. So I use it with direct current with battery removed. BIOS software doesn't continue the installation.

 

[Amelith Nargothrond]

Well the other problem is the laptop doesn't power on with the battery plugged in. So I use it with direct current with battery removed. BIOS software doesn't continue the installation.

You should send your laptop to an authorized Dell service point and stop trying to fix it yourself. None of the symptoms make any sense in my opinion, unless hardware or firmware failure is involved, which may require special tools and skills.

Update: you must also send your battery and ac/dc adapter.

 

[vindiesel]

Hi in my opinion it seems a problem of configuration of the bios can't reset the bios alkguna so that it is not from the bios?

Can be setup USB bios off?

I used to repair PCs and some for the USB keyboard disconnected and not being able to configure Bios to start Pc function perfect, having to use old keyboard of connection with pins on these cases so I think it is configuration bios USB keyboard off.

Reset BIOS: Dell 3521:

Remove the battery for about 2 minutes and press the on button for 2 minutes without battery.

 

[nishaddesilva]

Hi in my opinion it seems a problem of configuration of the bios can't reset the bios alkguna so that it is not from the bios?

Can be setup USB bios off?

I used to repair PCs and some for the USB keyboard disconnected and not being able to configure Bios to start Pc function perfect, having to use old keyboard of connection with pins on these cases so I think it is configuration bios USB keyboard off.

Reset BIOS: Dell 3521:

Remove the battery for about 2 minutes and press the on button for 2 minutes without battery.

Still no luck

 

[Porama6400]

Maybe it's keyboard controller failure

 

[Otis Grimes]

Yes, I also think that this can be the keyboard controller failure.

 

[ispx]

keyboard failure, cpu fan faster due to overheating, usb keyboard failure, battery failure.

time to take your dell to the workshop or trash it.