Rolling Internet

[chattahoochee]

My Wife has a 1 year old iMac, at intermit times the screen will start rolling and requires a "ReBoot" to stop it. The internet carrier is yahoo. I have the same internet carrier on my MacBook Pro without this "Rolling" problem.
I have gone through the "First Aid" in Disk Utility ran OnyX without results.
The iMac has OS X El Capitan.
Any suggestions ?

 

[Goatllama]

Have you detached the wheels?

....... I'm sorry, what exactly do you mean by rolling? Like, the screen looks like it's roiling ocean waves? Maybe reinstall OS X?

 

[chattahoochee]

A continues roll of the screen that's displayed. The roll is ~ 1 screen per 5 sec.
The iMac was recently upgrade to El Capitan. This was the fix recommended by Apple help.

 

[Jessica Lares]

It sounds like your display panel has gone bad. You're out of warranty at this point if you don't have AppleCare, so you're looking at having to spend money on the repair.

You've done everything to rule out it being a software problem, so it's definitely the hardware.

 

[chattahoochee]

We have the extended warranty on this iMac, I would like to reinstall El Capitan see if that helps. You mentioned "Display Panel", can you make this clear to me ?

 

[Jessica Lares]

We have the extended warranty on this iMac, I would like to reinstall El Capitan see if that helps. You mentioned "Display Panel", can you make this clear to me ?

The "Display Panel" is the screen itself.

Here's the instructions on how to get into OS X Recovery: https://support.apple.com/en-us/HT201314

You'll want to make a backup of your stuff before you reinstall El Capitan.