What DaveLembke says is true. This is not a contradiction, but a point of view.
IMO, Aay Laptop o tablet that does not perform well after only two months must be reported to the vendor or the device maker.
As for Windows 8.1, it is very forgiving and it will catch minor errors or abnormalities. The user shooed not have to do any thing at all, unless something horrible happened. Like being hit by a tornado or a mudslide.
Call the vendor right now!