You don't say which Alcatel device you have. You could do a factory reset from the recovery system but this will delete all your data that's on the device. If you go the boot loader route - I suggest just wiping the cache partition first to see if it resolves the issue.
Just use the following Google search "Alcatel
model wipe cache partition" where
model is the model number or name of your device.
If you need additional help or have more questions or details to share, please join the site so you can reply in this thread. See
this link for instructions on how to join Android Central.
