stepas85 ha scritto:
Ciao Samu
Anche io, come già detto, ho avuto il tuo problema e oggi son riuscito a "risolverlo", semplicemente ho installato i driver vecchi i 340.52 e al riavvio mi è partita subito la wu di GPUGRID 
Prova e vediamo se è quello
Ciao
Stefano
sono tornato al driver 340.52 ma sempre stessa storia...

Questo è il log degli eventi:
06/10/2014 22:04:50 | | cc_config.xml not found - using defaults
06/10/2014 22:04:50 | | Starting BOINC client version 7.2.42 for windows_intelx86
06/10/2014 22:04:50 | | log flags: file_xfer, sched_ops, task
06/10/2014 22:04:50 | | Libraries: libcurl/7.25.0 OpenSSL/1.0.1 zlib/1.2.6
06/10/2014 22:04:50 | | Data directory: C:\ProgramData\BOINC
06/10/2014 22:04:50 | | Running under account Win
06/10/2014 22:04:50 | | CUDA: NVIDIA GPU 0: GeForce GTX 560 Ti (driver version 340.52, CUDA version 6.5, compute capability 2.1, 1024MB, 890MB available, 1275 GFLOPS peak)
06/10/2014 22:04:50 | | OpenCL: NVIDIA GPU 0: GeForce GTX 560 Ti (driver version 340.52, device version OpenCL 1.1 CUDA, 1024MB, 890MB available, 1275 GFLOPS peak)
06/10/2014 22:04:50 | | Host name: PC-Samuele
06/10/2014 22:04:50 | | Processor: 4 GenuineIntel Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz [Family 6 Model 42 Stepping 7]
06/10/2014 22:04:50 | | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss htt tm pni ssse3 cx16 sse4_1 sse4_2 popcnt aes nx lm vmx tm2 pbe
06/10/2014 22:04:50 | | OS: Microsoft Windows 7: Professional x86 Edition, Service Pack 1, (06.01.7601.00)
06/10/2014 22:04:50 | | Memory: 3.49 GB physical, 6.98 GB virtual
06/10/2014 22:04:50 | | Disk: 931.41 GB total, 647.04 GB free
06/10/2014 22:04:50 | | Local time is UTC +2 hours
06/10/2014 22:04:50 | GPUGRID | URL
www.gpugrid.net/; Computer ID 184204; resource share 100
06/10/2014 22:04:50 | GPUGRID | General prefs: from GPUGRID (last modified 06-Oct-2014 06:33:21)
06/10/2014 22:04:50 | GPUGRID | Computer location: home
06/10/2014 22:04:50 | GPUGRID | General prefs: no separate prefs for home; using your defaults
06/10/2014 22:04:50 | | Reading preferences override file
06/10/2014 22:04:50 | | Preferences:
06/10/2014 22:04:50 | | max memory usage when active: 1786.71MB
06/10/2014 22:04:50 | | max memory usage when idle: 3216.08MB
06/10/2014 22:04:50 | | max disk usage: 10.00GB
06/10/2014 22:04:50 | | (to change preferences, visit a project web site or select Preferences in the Manager)
06/10/2014 22:04:50 | | Not using a proxy
06/10/2014 22:05:04 | GPUGRID | update requested by user
06/10/2014 22:05:21 | | Project communication failed: attempting access to reference site
06/10/2014 22:05:24 | | Internet access OK - project servers may be temporarily down.
06/10/2014 22:06:37 | GPUGRID | Sending scheduler request: Requested by user.
06/10/2014 22:06:37 | GPUGRID | Not requesting tasks: don't need
06/10/2014 22:06:41 | GPUGRID | Scheduler request completed
Non capisco proprio...