My memory is completely full when I tried following the data recovery and copied the wrong file using command line tool Test Disk. As it was taking so long to copy, I turned it off and I realized I copied the wrong file. Now my laptop memory is now full and lead me to more problems.
I have had similar problems to :
Ubuntu boots on terminal only, how do I recover the GUI desktop?
Now my screen keeps blinking: https://www.youtube.com/watch?v=BN4twl0V8JQ
Can anybody help? Many thanks. Wish you all the best.