QUOTE(Grits @ Jan 12 2013, 05:43 PM)

My Internet is out and my tech advisor (The Boy) has gone to the beach for the weekend.
I'm about to go get the hammer.
Go to "Control Panel," then "Internet Options." Click to clean out all cookies, wait till it finishes. Click "OK."
Click once on the "Start/Windows" insignia in the lower left corner of your monitor. In the address bar type in %tmp%
Click on the little folder that shows up at the top of the "start" box. Select all, delete all it will let you delete.
Power down your PC and then unplug your modem (or Reset it if it has a Reset on it).
Wait three minutes or so, then come back and plug up your modem. Wait till all the lights have settled down and are lit across like they are supposed to be.
THEN (not before) power up your PC. Your internet should work now. If it doesn't, it is the IP address and Comcast (or your internet carrier) should be able to reset that.