I recently upgraded to Windows 7 from Vista, both the 64-bit versions, and I have suddenly started having trouble with my wireless connection. I have a motherboard with a built in adapter, a Realtek RTL8187, and I periodically lose internet connectivity, and am unable to find any new networks. This also always coincides with my system monitor reading 80-90% CPU usage while idle, up from a usual 2-5%, and stays that way until I restart. What temporarily fixes the problem is to run the network troubleshooter once after the problem occurs, which decides to reset the adapter, but stalls out if I go any further in the process, and then once again after I restart, which enables the adapter again, and works for a while until the same thing happens again, anywhere from a few minutes to a day or so later. The windows upgrade assistant program warned me to download an updated driver before upgrading, and install it after, which I did. Any help would be greatly appreciated, I'm pretty stumped.