Welcome to the club! This has been an issue for the last several years, use the search function in the Evernote database and you will find thousands of comments about this problem. The only way that I was able to solve this issue was to instal a solid state drive. WOW, what fast start-ups and since the SSD was installed not one time have I seen the dreaded (Not Responding)
Regards,
David in Wichita