try running a separate mains connection to the pc from a socket somewhere else in the property just in case there is a loose connection in the mains and the tv is taking all the power. This is unlikely but not unknown.
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 ?