i've been getting a stop code error of 0x000000be with parameters

  0XF83864BB 0x02ED4121, 0x17A6AB8, 0x0000000B

 

the named file is

ar5211.sys

but i don't know which driver this file is in, so that i could disable the driver.

i haven't installed any new hardware or anything like that, and i can start it in safe mode but i don't know where to go from there with it.  i would appreciate any help or suggestions.  thank you!