I'm back and having problems with GPU

Hi
it's been a while...
Anyway - installed v7.1.52 go it to work with CPU no problem, discovered that the install package does not come with any GPUs.txt file so downloaded that - why is the question.
Anyway - restarted and added a new slot in advanced mode downloaded a WU and GPU has sat there doing absolutely bugger all, nada, nichts, nothing. It's been 24 hours and two reboots to boot so something is stopping it...
Any ideas?
I've an EVGA Geforce 690 Extreme with 301.42 drivers
TIA
it's been a while...
Anyway - installed v7.1.52 go it to work with CPU no problem, discovered that the install package does not come with any GPUs.txt file so downloaded that - why is the question.
Anyway - restarted and added a new slot in advanced mode downloaded a WU and GPU has sat there doing absolutely bugger all, nada, nichts, nothing. It's been 24 hours and two reboots to boot so something is stopping it...
Any ideas?
I've an EVGA Geforce 690 Extreme with 301.42 drivers
TIA