The real fun is when you can’t watch what their doing because its over the phone, so you just have to hope they are doing it right. I used to hit them with the “Let’s try this; hold down the power button for exactly 30 seconds, then turn it back on.” Worked every time, but I did once have a guy ask me why that worked, and I didn’t want to call him an idiot so I made up some BS about it being a way to “flush the power from the system” and he bought it.

My initial thought is “I don’t believe you” if they claim to have already restarted the PC. Sometimes they Think they did but only put it to sleep or something, and sometimes they are just lying to seem less stupid.