Doing PC repairs. So I was thinking about doing some local pc repairs in my immediate area. I'm pretty savvy with the stuff and have fixed several of people's that I know. However I wanna make some extra cash so I was thinkin bout advertising myself. Now, I'm not making a living here, just extra cash here and there. My question is, what should I do if something catastrophic happened? Say something broke beyond repair. I don't have insurance and not much extra money to replace people's stuff. Should I have em sign a waiver? Anyone else ever done repairs like this ?