most bluescreens are just something that went wrong with the hardware. Mosts blue screens are bound to your ram memory. Frequent occuring BSODs are probably a broken RAM module. Run memtest (if it re occurs like everytime you reboot, ...) to check memory.
If it's 1 blue screen, your fine. Pc's are just stupid. Errors happen alot and when they do, it's very annoying.
Good luck
Also, when i had my series of blue screens (Everytime i booted my PC i had like 3-10 blue screens before it could stabily run. Formatting didn't help, changing ram didn't help, etc etc long story), ronpaul helped me alot. He told me to send him the dump files so he could read them and see what was exactly wrong.