Windows 7 reverting from win 10 to win 7

Part of your problem here is that Microsoft only allows reversion from W10-->W7 for 30 days after you originally performed the upgrade to W10 on your PC. After that, it's problematic and that's why you had to take it to a Tech and pay to get it done.

The thing you need to check now after the reversion to W7 has been completed (such as Norway suggested), is that your W7 is Activated. If it's not, you did something wrong and may need to take it back to the Tech at Staples and pay to have him fix it. It's not as important as it used to be for W7, as Microsoft no longer produces weekly push updates for either W7 or W8x. W7 end-of-life's in 2020, so you only have 3 years of life left on that OS before it becomes an outdated dino like XP is now, fully prone to hack attacks as MS has had no security updates for XP since Apr. 2014. You'll have to move to something newer, W8x or W10 at 2020 or soon after. MS is continuing to produce updates on a monthly basis on W7 which you now have to install manually and won't automatically install for you AS IT HAS DONE IN THE PAST! MS is de-incentivizing people to stay on W7/W8x and wants everyone to move to newest Windows--more $$ in their pockets. Some food for thought, however, as your ageing W7 system is going to be targeted more and more by hackers trying to break your system up until the floodgates open in 2020 and MS completely dumps support for W7 as mentioned.

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