i'm using HVR 1300 with latest drivers on Win7 x64 without any problems ...
I have the problem with installation of the newest drivers for HVR 1300 on Windows 7 64bit, the system says: The driver is not signed: driver WinTV Cx880 AVstream TS/Encoder Driver, service: Hauppauge WinTV88x MPEG/TS Capture, location: C:\Windows\System..\hcw88tse.sys. In the Device Manager it has exclamation on yellow triangle and reporting the error code 52.
i'm using HVR 1300 with latest drivers on Win7 x64 without any problems ...