No fix no fee idea would be good, makes people think "what the hell, it's worth the try". You could however try concentrating more on building new pc's. I have built a few for friends and they were happy with my services and willing to pay.
Things you could do:
- Advice (I want to upgrade, what should I do?)
- Upgrade (I want to upgrade, could you do it for me?)
- Repair (I'd say 3 years as oldest unless it seems to be simple to solve like replacing a 20 quid psu)
- Advice (I want a new system and not a n00b, what would you advice for me to assemble?)
- Advice & Assemble (I want a new system but I'm a total n00b could you build it for me)
