fluctuates

ok i have a router right next to my lappy and it connects with the wifi fine.. my ping is usually fine and doesn't fluctuates .. as soon as my wifi starts scanning for other networks like say 20 seconds later then the ping fluctuates again .. how to stop this automatic scanning after it has...

Hi guys, I have a zebronic 500 w psu, in my area after 10 pm voltage fluctuations begins and my apc bac ups 700 watt goes into battery mode as the voltage dips below 170 Volts.If i connect my pc directly to a surge protector my pc restarts when voltage fluctuates, i have heard that if i change...