Why does my linksys router constantly reset itself every 2 hours?

Every 2 hours I lose my internet connection and need to rest my linksys router to my network name and enable security.|||Never had one do that before. Try borrowing a friends router and hook it up to your system and see if it still does it. If it doesnt u might just need a new router.|||Could be failing. If you've had it a while, may be time to upgrade. Mine was doing that a few months ago and very shortly thereafter, it stopped working.