depends on the type of bugcheck you are getting, and the age of the machine. For older machines with windows 7, when you reinstall, update the BIOS and do a full format (not quick format) of the system, install windows and get driver updates from the motherboard vendor. If you run windows 8.x you should still update the BIOS and drivers for your motherboard but you don't have to do the full format.
if you fail to get driver updates from your motherboard vendor, then windows will use generic drivers that may have issues with your machine.
KillerWhale4726 :
I've been having a lot of problems with my computer for a long time now. I have been crashing a lot and have froze a lot in the past. The only fix is re-installing windows but it proceeds with in a month. I just want some suggestions of what to do.