Been helping a lot of customers and I hear it all. They almost always say its their ISP. They refuse its is their computers or router. Agressively refuse to try a direct connection into their modem. Not even knowing the speed they are paying for exactly. So at what point after you have tried everything to figure out what is causing speed/wireless issues do you assume it must be the ISP? Then how do you convince the customer as well? After I have usually tried all of this: Running netstat -b 5>activity.log to get a list of connected programs. Running sfc /scannow Checking the signal strength Broadcasting the SSID Disabling the firewall Clearing the browsers Checking for virsuses and spyware Attempting a direct connection to the modem Checking physical connections Error Check under my computer Defrag a few registry fixes... Then my way of showing proof are with several speed test like on speakeasy.com and testmy.net. How about you?