If I might intrude here. I believe that there is nothing using 100% CPU - this is simply the way that Task Manager works nowadays. (Although it may be an unintentional bug that Microsoft has introduced in it). When you launch Task Manager it will always start by showing 100% CPU usage - until it can monitor just what is actually being used, which only takes a second or so. This ties in with what the OP is reporting. Nothing is actually using 100% CPU, it's just a number that is bei