Hello, I replaced the HD of my MBP 17" Mid 2010 with a Samsung SSD 850 EVO 1T about a month ago. At the beginning it was very fast during restart but for the past two weeks, I noticed a long pause (about 15-20 seconds) after I chose restart. This also happened when I turned on the system. It was like the system was looking for a boot drive and it took a long time to find it. Know what is going on and how to fix this?