Shorter the name the better
Catchy town related names are good for you and Google.
Tell what you do/computer support/computer repair/pc repair
Do a local competition check, see what names they have going on
I have learned to not say "Computer repair" because people associate that with hardware, "Support" is more up my alley, as I do mostly software support.
It's been said to not say "Lisa's computer support" in case you want to sell, same goes for the town name "Rochester computer support" but it might be better if you want to sell because a competitor can buy you easier since the domain and google/phone will be already in place with consistent marketing.