I am having Windows 8.1 operating system installed in my maching and recently it started crashing with the Blue Screen of Death error that states "Bugcheck code 0x000000d1, DRIVER_IRQL_NOT_LESS_OR_EQAL in netwlv64.sys" and some driver problems. I have tried download driver from microsoft that is not working. I think that there is some fault in the microsoft driver itself that is given and many people are facing similar issues as well. Any ideas how to fix this? Thanks