There are a number things that could be affecting your laptop. First and foremost, cleaning the CPU cooling fan with some canned air. This can be accomplished by opening the cover over the CPU because the cooling fan and ducting for the cooling can be opened for cleaning. If you don’t feel competent enough to do this then take it to a competent computer shop. Next, do not believe Microsoft’s comments about the system not needing garbage clean out of things from the web. The same is applicable to Defraging the laptop HD. As soon as I notice the system slowing down I do a system cleanup. You may also want to get a good registry cleaner because the system will run slow if there is a garbage in the registry and Microsoft does not do a good job of cleaning after it patches things and leaves a massive amount of garbage. Defragging should done at least weekly. There are a number of good Utilities available to do this. I happen to use Piriforms CCleaner and Defraggler. They are both free, or you can buy ones directly from Piriform that actully will do this in the back ground. The free ones do not, and have to manually run.