Ever since installing Windows 10 my Laptop has been running really hot. The fan was going constantly and things were slowing down. It seemed as if there was something always running in the background. Sometimes it wouldn't even go into sleep mode when I closed the lid, just keep running and getting hotter. When I lookend at task manager my hard drive would be running 100% and be in red.
I eventually found out the fix and it has transformed my laptop. It now runs much faster and cooler plus it goes into sleep mode properly and starts quicker. My hard drive went straight from 100% to 5%.
It was all down to the window notification setting. If you go to settings/system/notifications and turn them off then it makes a big difference.