I am having a problem in my brother's computer- scrolling in pages (no matter what app), and watching youtube videos, and other streaming videos are working slow (playing videos in vlc from my computer works just fine)..
I tried 2 things:
I thought it might be a problem with the GPU driver - so I reinstalled it, nothing changed.
I used Ubuntu Live CD (without installing) to play videos and scroll through pages in order to check whether the GPU is defected - using Ubuntu Live everything works great (I chose Ubuntu because all drivers are pre-installed)
What should I do next to find and solve this problem?