I had tried out EIS 9 on my desktop (trial version) after an initial smooth installation and engine updates and scan i shut down my pc. The next day, my pc began to freeze up after boot, at times the network would not boot up and had to restart the pc or i would get a BSOD. I uninstalled EIS 9, got back on Avast and all the problem solved on it's own. Forward a few days, and i tried it again, this time on my laptop also running windows 8.1 after successful installation and a restart later i was faced with the same issue all over again freezes on boot, BSOD's, etc. I have a key for EIS 9 but i am afraid to use it at the moment, because neither would i be able to use it and it will just tick away the time on my license.