I'm having some probs with my pc and one of the side effects is that my Boinc won't auto start anymore . Before I'd turn on the pc and Boinc would be running and an icon would be in the task bar at the bottom left . Now I start the pc and no Boinc . I have to go , Start > programs > Boinc and then it runs ok , that is untill the pc crashes again . I haven't changed any Boinc settings and I think it should auto start . Here is a pic of the Boinc settings .
Theres always that risk, but if you close down boinc first then run the new download it should do a repair install over the top but retain the current work.
I wouldn't bother doing any of this untill you've sorted your PC crashing problems though
Looks like I'll be keeping the pc for a while as me probs seem to have been sorted . Re-installed Boinc and its up and running again so alls well with the world .