I have forced some of my pre-installed apps to stop to try to improve internet browsing. Does anybody know how to restart them again as there is no restart or enable boxes to click on
If you just did a 'force stop' on the app... that just killed the process. Either run the app, or if its a service, like LG Health, you could even reboot the phone.
"Force Stop" is really just a temporary thing. The "Disable" button is permanent, or at least until you go in and re-enable it.