Registered just for this thread.
I bought my 7260 for Desktop a week ago on my Windows 8.1 x64 PC. Installed it on Wednesday. It worked for two days and now gives code 43. Bluetooth was using the generic driver at the time.
Installing the updated driver didn't work. Turning the system off, pulling the plug, replacing the plug and turning it back on didn't work. Switching the Bluetooth support service to Automatic (delayed start) and telling it to run didn't work. System restore didn't work.
The wireless works great but it's not worth it to keep a half-defective product.