Trying out W8.1 Pro on my dual boot system. W7 Ultimate x64 is primary. I don't use my system for anything exotic. In addition to the everyday chores, I use it extensively to view videos via three ethernet wired media players installed in my living room and two bedrooms. It took me a while but I was able to get Windows 7 security requirements tamed and it permits me to view videos from my shared drive without having to deal with the DREADED "NetUser ID & Net Password" requirement. Simply clicking on "Workgroup/My Computer on my media players gives me a "Logon Successful" message and I'm off to the races. W8.1 Pro is another matter. After three weeks of trying every conceivable security setting, workarounds and suggestions from other forums, I have surrendered. It beat me. No matter what I did to get a "Logon Successful" message after going through the "NetUser ID & Net Password" input, no happiness. And yes, I tried every possible combination of ID and password unsuccessfully. Nothing was able to get around it. I don't use HOMEGROUP simply becaue this is the only computer connected. Ideal would be as I have with Windows 7....no "NetUser ID & Net Password" screen. There are dozens of others experiencing the same problem. Just Google "NetUser ID & Net Password" . So, here I am. Before I dump W8.1 Pro and stay with W7 forever, any ideas anybody/Microsoft? Suggest something and I'll try if I haven't already tried it.