I have a Toshiba Satellite L510 Notebook. From last few weeks the wifi adapter is giving big trouble. It drops the connection with access point frequently. After some days it stopped detecting the hardware also. I went to Toshiba Service Center , they some how repaired it, telling me they updated BIOS (Insyde 1.50) . But now also it drops the connection frequently (lesser than before). I am using Windows 7 Ultimate x86 , I also used Windows 7 Ultimate x64 but the problem persists.