Canon CanoScan LiDE 30 Flatbed Scanner "defolt settings" Questions

...scan. How can I make it stay locked? in scanner software there is 2 types od system come one is defolt other one is coustm go in coustm chage che reslution make it 100, 200, ......,1200 ...

...has stopped working on my Win 7 64bit HP all in one pc, why? is the image printer marked as defolt printer in control panel wiew printer and mark image printer as default printer with right ...