Ever since I have upgraded my hard drive to a Sandisk SSD my PC crashes when BT Netprotect does a full scan (a quick scan is OK). I have had the SSD replaced by the supplier and same thing happens again - it gets part way through the scan and the PC then shuts down.
BT Technical support were supposed to call me back to resolve this (about a month ago!!) but failed to do so - it has got to the stage where I am thinking of abandoning BT Netprotect but why should I when it is provided as part of my BT Broadband account?
My advice and that of others on the forum would be to uninstall BTNetprotect. It can cause problems on some computers and is a resource hog. Do a search of the forum to see the problems. There are far better free antivirus programs available such as Avast Free and AVG Free.
If you do want to uninstall BTNetprotect use this guide and make sure you use the BTNetprotect/McAfee removal tool after you have restarted your computer.