Kosomol,
I have the same exact problem running windows 7. After installing Bd total 2012, update, and restart it would connect normally however after awhile or couple hours i restart the computer, it wouldn't connect. I have tried to set network to trusted and stealth mode to off and generic to yes but still same results.
When it's doing this it seems to me like it's doing something in the background scanning or something i don't know because the red hdd light is working and when i restart it won't, i have to physically press the off button.
When uninstall the product, everything is working good again. Now, i'm using a different product and it's working correctly and running perfectly without issues. I just contact customer service by email but so far nothing yet.
