OS 10.12.6
Today for the first time, a blue or sometimes black band appears down the right hand side of my sidebar. I was using iSkysoft video converter at the time. If I drag my mouse down onto the band it will descend but reappear above in thin horizontal lines in no particular place. What is going on and what is the solution?
jaybass
OS 13.6.6 iMac (Retina 5K, 27", 2017, 3.4 GHz Intel Core i5, 24 GB RAM, 2400 MHz DDR4. SuperDuper. 1 TB Lacie HD
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