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Blue Screen on Mac may mean graphics card

A few years ago you exchanged a hard drive out for me in my iMac.  I am having "blue screen" style issues plus screen anomalies which have made the unit unusable.  
I cannot find a repair signup.  Do you no longer repair?
Thank you for your time,
___________


At this time I only do hard drive replacements on older machines. But the issue you described sounds more like it is related to the graphics card. The graphics card is soldered onto the logic board and is not considered a replaceable part. The entire logic board would need to be replaced and that is an expensive part.

If you are experiencing video issues like flashing screen, artifacts on the screen, blocks, lines, or static, these are all symptoms of a failing graphics card. The apple store would be the place to handle that.
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