Graphics card down

My graphics card, The gtx 970 was bought just before Christmas and installed by professionals at Best Buy into a new computer.

It was running the GridGrind part of boinc and as of last week stopped.

The boinc manager said that it couldn't find my graphics card, so I rebooted everything. I then made sure everything was updated and same propblem.

I've also discovered that my iclone and hitfilm programs could no longer access the gpu rendering.

I've scoured google and I've come across nothing that helps me... some might but they talked in a computer language that's still beyond my understanding.

So I'm looking for ideas.