Will not start

[webchambers]

I put my phone on charge and when i woke up i noticed it had a black screen with the word samsung on it and a blue flashing light. I pressed the volume down and start button the phone restarted showing the samsung logo then went back to black screen with the word samsung and blue light flashing.

I keeps going back to the black screen with just the word samsung and blue light flashing.

Any advice please.

 

[mustang7757]

Welcome to AC!
Can you get into download mode ?
Probably going to need to flash the stock firmware with Odin

This should explain download mode

How to Boot Your Galaxy S8 or S8+ into Recovery Mode or Download Mode

Samsung devices have two pre-boot menus that every Galaxy owner should know about: recovery mode and download mode. The recovery screen allows users to wipe cache files or perform a factory reset, which can help save the phone from a soft brick. Download mode, on the other hand, allows you to...

android.gadgethacks.com