Scenario first. My system is a windows 7 x64. it is connected via LAN cable to my wifi router (also used for internet). Prior to installing Canon Pixma MG5370 apps and driver, the windows works fine. My Canon printer is connected via WIFI to my router so in essence, I print through my router to the printer. No errors were encountered during the installation process.. After all these, I noted that my windows will not shutdown anymore. After clicking shutdown, it will reach the screen where it shows "Shutting down" and a spinning disc like icon. and this is where it will remain and not power off at all. hard disk Led not blinking during this time. I had to do a HARD FORCE shutdown. anyone encountered this problem, and most importantly, found a way to bypass this problem? short of having the need to system restore and everything? Thank you..