Being the family tech is one of the most thankless positions you can be in within the family social order.
True Story:
I was at my brothers one year for Thanksgiving. We showed up about 2 hours early so I could hang with my brother as well as my nieces. Everyone had the same idea so we actually had the whole family at the house tow hours before meal time, cool. NOT!
So while sitting at the table talking to my brother my sister comes up and says, "I figured while you were here I would bring my laptop over for you to look at it is running slow." Now in fairness she did say hi first but she did not ask about how things were going, she started with a work request. Okay cool, not a big deal and I can talk to my brother while working on her laptop. Well that was the beginning. Within the next 10 minutes I have 4 more laptops in front of me. Seems everyone figured this was a tech clinic, not a family gathering.
Over the next 4+, yes 4+ hours works on driver updates, cleaning spyware, tracking down bad installs and so on. The whole time I was being pressured to get it done soon for two of them as they wanted them for their WoW RAID later that day. I am sometimes just to nice of a guy so I kept quiet and kept working. When I finished everyone was excited and vanished to use their now working computers. Meanwhile I was finally going to eat except the food, including desserts had been picked over, I was eating cold leftovers essentially.
As the evening ended I was amazed these same people came up and were giving me grief for not spending time with the family the whole day, just sitting there with my head stuck in a PC.
Christmas that year rolls around and it is at my house this time. As I meet each person at the door I ask if the laptop they are carrying is a gift for someone. If they so no I tell them to put it back in their car. A few people actually came a bit salty, saying they had thought to have me help them with a PC issue. I told them we could talk later. After the meal, I mean literally, I was deluged with PC questions and fix requests. I politely informed them that I was not working today, I was enjoying time with my family.
I have never seen the family clear out so fast in my life. Suddenly their plans to stay the day where being disrupted by forgotten visit requests :-) This was enough for my "free" service to my family to end.
My current policy for most of the family is they will pay me a fair rate for any work done and I will schedule time for them when I can. My brother still gets free PC work and some of the less obnoxious family members get the low cost of buying me a nice dinner for any work done that day.
You have to set boundaries with people or they will suck the life out of you for free tech support.