Dell Laptop Wont Boot. It is a common problem and can be easily fixed. How to Update the BIOS in Your Dell Laptop.
Disconnect all external devices or peripherals like USB drives, printer cables. You might be asked to sign in with your Microsoft Account or Local Account password. Sometimes when the Dell laptop boot process is completed, the Dell logo appears and disappears suddenly.
It is a common problem and can be easily fixed.
There are a couple of things you can do to fix your laptop if its not switching on.
You might be asked to sign in with your Microsoft Account or Local Account password. If it does start you should also try to do a Pre-boot System Assessment, FN+Power. Do so if the problem persists or your Dell Inspiron laptop still couldn't boot into Windows OS or stuck on black screen during startup after doing all prior.