Get the fuzzy finder windows

My Mac Pro with OS X 10.9.5 2009 and my husband of 2011 MacBook Pro with the same OS developed blurred finder windows today.  These computers are not networked in some way.  Basically, the finder windows are unusable because of the truncated graphics, they show.  Someone recently had this problem or knows what to do?  I have reset the PRAM and that seemed to help, but only for an hour or two.  The last message I've seen this problem was 2 years ago in this forum.  (This person said to 1) reset the PRAM and NVRAM and 2) restart the computer in safe mode and then restart again.  (3) If this didn't help not told to start HD recovery and then fix the hard drive and the permissions, and then reinstall the 10.9.5 update.  And if none of this has helped 4) reinstall Lion/Mountain Lion, Mavericks, then reinstall the 10.9.5 update.  Apparently, the person said they tried all of these and they still had the problem.

I think it's weird that what happens to two of our computers at the same time.  Could this be a hardware problem?  The Mac Pro has 24 GB of ram (18 that has recently been installed) and the Mac Book Pro has 8 ram or casual jobs.

Thank you very much for your suggestions!

KT

can you provide a detailed description of what it looks like, or a screenshot?

Tags: Mac OS & System Software

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