Scrambled graphics at login screen and blue screen after login.
My MacBook Pro has recently be running a bit slower than usual, nothing too drastic, however just before the login screen appears it shows as scrambled/pixelated blocks of colours. It lasts a few seconds and then I can login as normal. After I login I see my desktop but shortly after it goes blue for a few seconds and then back to normal. Can anyone help with what this could be? I have tried the following to resolve the issues but they still remain.
- Clean install of Mountain Lion from backup and setup as new (after non fixable disk errors. There are now no errors)
- Reset PRAM
- Reset SMC
- Boot and restart in safe mode
- Create new user account
- Running quick and full Apple Hardware test which found nothing wrong.
I will try and get photos/videos up as soon as I can.
Included are the images. The first is the blue screen after login. The second is seen prior to login and the third is also seen prior to login but after restarting rather than shutting down and turning the mac back on.
Is this a good question?