Do you remember if you installed any hardware or software before it started? Have you considered spyware/malware/adware?
If you have not considered the latter I would suggest getting something like "spybot search and destroy" and giving that a try.
WPA2 hack: How secure is your Wi-Fi?
Microsoft Surface Book 2 hands-on review – bigger and 5x faster
Best kids apps for iPhone & iPad
Que faire si son iPhone ou iPad est tombé dans de l'eau ?