Ok let me turn on work mode for a moment (Desktop engineer).
Have you......
- Tried other USB devices in this USB port. Do they work?
- Checked your installing using the Local Admin account on the lappy?
- Tried Rclick on the downloaded file > Run as Administrator?
- Tried Rclick on the downloaded file > Properties > Compatibility to WinXp Sp2?
And just to clarify your saying the downloaded file has installed succesfully but when you connect the device to the laptop it doesnt recognise it? Id uninstall and start again from scratch with the above suggestions.
That will be £50 please