When you are trying to use some mod or new custom roms on your device you will face Android Boot Loop.
After updating any program wont boot
The following method will work bot the Stock Android devices and Custom ROM android devices. Remove the battery from the device and wait for 30 seconds and then put the battery again on your device. Now your device will come out of the Android Boot Loop and at the first time the device will take some time to reboot. Follow the Above guide ( In the end go to the main menu of recovery and Reboot your phone. If it still persists, do the following on your device.
If your phone doesn’t has the remove bale battery like Nexus 4, then power down the phone and keep it powered off for 5 minutes. Go to “Mounts & Storage” and Choose “Wipe /data” after that Choose “Wipe /cache” and now reboot your phone. And the Android loop problem is solved on your device.
Booted into boot repair on a flash drive and ran the program but it still won't boot.
If you are an Android mobile user and more into mods and customization on your device, then you are aware with the Android Boot Loop.
No beeps are heard, the caps lock button flashes twice and the f12 button stays on.