My Windows 8.1 came in a download from the Store ( I presume ) and since then a program called Registry Mechanic went rogue and messed up Search and Indexing. I tried to restore from Restore Points but it did not help. I've been on Microsoft Forums and other people have had the same problem. Some said the Restore point fixed it but mine didn't. I've tried Microsoft Support where you get a phone call and when they connected all I got was static and some broken music playing dimly in the background but the call did not work. Phone lines to India must be screwed up. Why oh Why can't Microsoft pay for Americans to work Tech Support? So now I'm thinking perhaps I should re-install 8.1 but how do I do that? I went into where it shows your past downloads but it isn't showing that far back. Only shows some updates to 8.1. Since it came as a download I would presume it is still residing somewhere on my computer and could theoretically be re-installed but you play hell trying to get any support out of Microsoft even if you are willing to PAY for it.