Blue Screen during/after(not sure) firmware update led to a very confusing boot loop.

When I returned I found a blue screen error. I did not think much about it at first as it said "we will restart the system for you shortly" so I just left it like that. After a while it was still stuck on the same thing so I decided to manually restart by holding down the power button for a while. I did not note down the error code and I realized this mistake only after manually shutting down the pc. Next I clicked on the power button again to boot it up and the keyboard backlight glowed once like it usually does while powering on. Thinking it was back to normal I left once again to do some chores. 

Once I returned all i saw was my keyboard lit up and then the light went off once again. And after about 2-3 seconds it happened again. And ever since then it has been stuck in the same loop. 

I tried doing some research and it said to disconnect the battery, cmos battery and then holding the power button for a minute and then plugging both batteries back in. Doing so did nothing and as soon as i plugged the battery(after plugging cmos cell) the keyboard lit up on its own and the same thing started.

Next i read it could be a faulty cmos so i just closed the laptop and left it on my table while the lid was also closed for overnight. Next morning I opened the laptop and it was no longer doing the same thing but pressing the power button didn't do anything either. So I plugged the charger and the same loop started again. I believe the battery drained out.

Next in order to check the cmos battery I took it with me at Uni and used a multimeter at the lab. The battery is fine.

And now im at a loss of things to try. My best guess is that the blue screen during firmware update messed up the BIOS to such extent that I can't even access the BIOS and nor is the windows recovery thing running.

The only things happening is that the keyboard light turns on and off along with the led indicator while the screen stays black. And when I close the lid while keeping it plugged to the charger then also the led indicator lights up white and turns off following the same loop as the keyboard lights. If needed I can show a video as well. Kindly suggest me a solution to try.

Blue Screen during/after(not sure) firmware update led to a very confusing boot loop.
Hello. I have a Dell Inspiron 15 3501 which is my personal laptop. Yesterday evening I got a prompt from Windows Update page in my taskbar asking me to restart in order to install a new firmware. I was about to go eat dinner so I plugged my charger, clicked on "restart now" option and then left for dinner.

When I returned I found a blue screen error. I did not think much about it at first as it said "we will restart the system for you shortly" so I just left it like that. After a while it was still stuck on the same thing so I decided to manually restart by holding down the power button for a while. I did not note down the error code and I realized this mistake only after manually shutting down the pc. Next I clicked on the power button again to boot it up and the keyboard backlight glowed once like it usually does while powering on. Thinking it was back to normal I left once again to do some chores. 

Once I returned all i saw was my keyboard lit up and then the light went off once again. And after about 2-3 seconds it happened again. And ever since then it has been stuck in the same loop. 

I tried doing some research and it said to disconnect the battery, cmos battery and then holding the power button for a minute and then plugging both batteries back in. Doing so did nothing and as soon as i plugged the battery(after plugging cmos cell) the keyboard lit up on its own and the same thing started.

Next i read it could be a faulty cmos so i just closed the laptop and left it on my table while the lid was also closed for overnight. Next morning I opened the laptop and it was no longer doing the same thing but pressing the power button didn't do anything either. So I plugged the charger and the same loop started again. I believe the battery drained out.

Next in order to check the cmos battery I took it with me at Uni and used a multimeter at the lab. The battery is fine.

And now im at a loss of things to try. My best guess is that the blue screen during firmware update messed up the BIOS to such extent that I can't even access the BIOS and nor is the windows recovery thing running.

The only things happening is that the keyboard light turns on and off along with the led indicator while the screen stays black. And when I close the lid while keeping it plugged to the charger then also the led indicator lights up white and turns off following the same loop as the keyboard lights. If needed I can show a video as well. Kindly suggest me a solution to try.