Nicola LFRNCL PM'ed me with this, apparently thinking he posted in the forums. The solution to it is really simple. But first the post:

Hello to everybody.
Here is the list of the projects in which I'm partecipating, sorted alphabetically:

30/03/2014 19:29:31 | Asteroids@home | URL http://asteroidsathome.net/boinc/; Computer ID 5754; resource share 100
30/03/2014 19:29:31 | boincsimap | URL http://boincsimap.org/boincsimap/; Computer ID 233424; resource share 100
30/03/2014 19:29:31 | CAS@home | URL http://casathome.ihep.ac.cn/; Computer ID 25300; resource share 100
30/03/2014 19:29:31 | climateprediction.net | URL http://climateprediction.net/; Computer ID 1308476; resource share 1000
30/03/2014 19:29:31 | Collatz Conjecture | URL http://boinc.thesonntags.com/collatz/; Computer ID 114844; resource share 100
30/03/2014 19:29:31 | Constellation | URL http://aerospaceresearch.net/constellation/; Computer ID 18704; resource share 100
30/03/2014 19:29:31 | convector.fsv.cvut.cz | URL http://convector.fsv.cvut.cz/; Computer ID 3565; resource share 100
30/03/2014 19:29:31 | correlizer | URL http://svahesrv2.bioquant.uni-heidelberg.de/correlizer/; Computer ID 15029; resource share 100
30/03/2014 19:29:31 | Cosmology@Home | URL http://www.cosmologyathome.org/; Computer ID 202995; resource share 100
30/03/2014 19:29:31 | DistrRTgen | URL http://boinc.freerainbowtables.com/distrrtgen/; Computer ID 54804; resource share 25
30/03/2014 19:29:31 | Docking | URL http://docking.cis.udel.edu/; Computer ID 189549; resource share 100
30/03/2014 19:29:31 | EDGeS@Home | URL http://home.edges-grid.eu/home/; Computer ID 36612; resource share 100
30/03/2014 19:29:31 | Einstein@Home | URL http://einstein.phys.uwm.edu/; Computer ID 9898672; resource share 100
30/03/2014 19:29:31 | Enigma@Home | URL http://www.enigmaathome.net/; Computer ID 89149; resource share 100
30/03/2014 19:29:31 | eon2 | URL http://eon.ices.utexas.edu/eon2/; Computer ID 2503295; resource share 100
30/03/2014 19:29:31 | fightmalaria@home | URL http://boinc.ucd.ie/fmah/; Computer ID 17743; resource share 100
30/03/2014 19:29:31 | GPUGRID | URL http://www.gpugrid.net/; Computer ID 164761; resource share 100
30/03/2014 19:29:31 | ibercivis | URL http://registro.ibercivis.es/; Computer ID 394994; resource share 100
30/03/2014 19:29:31 | Leiden Classical | URL http://boinc.gorlaeus.net/; Computer ID 115653; resource share 100
30/03/2014 19:29:31 | LHC@home 1.0 | URL http://lhcathomeclassic.cern.ch/sixtrack/; Computer ID 10308546; resource share 400
30/03/2014 19:29:31 | malariacontrol.net | URL http://www.malariacontrol.net/; Computer ID 734475; resource share 100
30/03/2014 19:29:31 | Milkyway@Home | URL http://milkyway.cs.rpi.edu/milkyway/; Computer ID 548847; resource share 100
30/03/2014 19:29:31 | Neurona@Home | URL http://falua.cesfelipesegundo.com/Neurona/; Computer ID 3273; resource share 100
30/03/2014 19:29:31 | NFS@Home | URL http://escatter11.fullerton.edu/nfs/; Computer ID 32765; resource share 100
30/03/2014 19:29:31 | NumberFields@home | URL http://NumberFields.asu.edu/NumberFields/; Computer ID 15275; resource share 100
30/03/2014 19:29:31 | OPTIMA@HOME | URL http://boinc.isa.ru/dcsdg/; Computer ID 6940; resource share 100
30/03/2014 19:29:31 | Poem@Home | URL http://boinc.fzk.de/poem/; Computer ID 174212; resource share 100
30/03/2014 19:29:31 | pogs | URL http://pogs.theskynet.org/pogs/; Computer ID 17081; resource share 100
30/03/2014 19:29:31 | primaboinca | URL http://www.primaboinca.com/; Computer ID 26720; resource share 100
30/03/2014 19:29:31 | PrimeGrid | URL http://www.primegrid.com/; Computer ID 416275; resource share 100
30/03/2014 19:29:31 | Rioja Science | URL http://boinc.riojascience.com/; Computer ID 2393; resource share 100
30/03/2014 19:29:31 | RNA World | URL http://www.rnaworld.de/rnaworld/; Computer ID 20204; resource share 100
30/03/2014 19:29:31 | rosetta@home | URL http://boinc.bakerlab.org/rosetta/; Computer ID 1665909; resource share 100
30/03/2014 19:29:31 | SAT@home | URL http://sat.isa.ru/pdsat/; Computer ID 20087; resource share 100
30/03/2014 19:29:31 | SETI@home | URL http://setiathome.berkeley.edu/; Computer ID 5127550; resource share 100
30/03/2014 19:29:31 | SubsetSum@Home | URL http://volunteer.cs.und.edu/subset_sum/; Computer ID 4276; resource share 100
30/03/2014 19:29:31 | SZTAKI Desktop Grid | URL http://szdg.lpds.sztaki.hu/szdg/; Computer ID 351466; resource share 100
30/03/2014 19:29:31 | Test4Theory@Home | URL http://lhcathome2.cern.ch/test4theory/; Computer ID 66799; resource share 500
30/03/2014 19:29:31 | The Lattice Project | URL http://boinc.umiacs.umd.edu/; Computer ID 100809; resource share 100
30/03/2014 19:29:31 | World Community Grid | URL http://www.worldcommunitygrid.org/; Computer ID 2352202; resource share 100
30/03/2014 19:29:31 | yoyo@home | URL http://www.rechenkraft.net/yoyo/; Computer ID 107169; resource share 100

And these are two of my three PCs operating with the list above: (The third PC, which is an iQ6600 with 8GB DDR2, one nVidia 9600GT and one ATI HD6450, is actually off.)

30/03/2014 19:29:31 | | Starting BOINC client version 7.2.5 for windows_x86_64
30/03/2014 19:29:31 | | log flags: file_xfer, sched_ops, task
30/03/2014 19:29:31 | | Libraries: libcurl/7.25.0 OpenSSL/1.0.1 zlib/1.2.6
30/03/2014 19:29:31 | | Data directory: F:\
30/03/2014 19:29:31 | | Running under account Nicola
30/03/2014 19:29:31 | | Processor: 8 GenuineIntel Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz [Family 6 Model 26 Stepping 5]
30/03/2014 19:29:31 | | 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 syscall nx lm vmx tm2 pbe
30/03/2014 19:29:31 | | OS: Microsoft Windows 7: Ultimate x64 Edition, Service Pack 1, (06.01.7601.00)
30/03/2014 19:29:31 | | Memory: 11.99 GB physical, 23.98 GB virtual
30/03/2014 19:29:31 | | Disk: 16.00 GB total, 9.18 GB free
30/03/2014 19:29:31 | | Local time is UTC +2 hours
30/03/2014 19:29:31 | | VirtualBox version: 4.3.6
30/03/2014 19:29:31 | | CUDA: NVIDIA GPU 0: GeForce GTS 250 (driver version 331.82, CUDA version 6.0, compute capability 1.1, 512MB, 456MB available, 768 GFLOPS peak)
30/03/2014 19:29:31 | | CAL: ATI GPU 0: AMD Radeon HD 6350/6450/7450/7470 series (Caicos) (CAL version 1.4.1848, 1024MB, 991MB available, 464 GFLOPS peak)
30/03/2014 19:29:31 | | OpenCL: NVIDIA GPU 0: GeForce GTS 250 (driver version 331.82, device version OpenCL 1.0 CUDA, 512MB, 456MB available, 768 GFLOPS peak)
30/03/2014 19:29:31 | | OpenCL: AMD/ATI GPU 0: AMD Radeon HD 6350/6450/7450/7470 series (Caicos) (driver version 1268.1 (VM), device version OpenCL 1.2 AMD-APP (1268.1), 1024MB, 991MB available, 464 GFLOPS peak)

31/03/2014 13:51:48 | | Starting BOINC client version 7.2.5 for windows_x86_64
31/03/2014 13:51:48 | | log flags: file_xfer, sched_ops, task
31/03/2014 13:51:48 | | Libraries: libcurl/7.25.0 OpenSSL/1.0.1 zlib/1.2.6
31/03/2014 13:51:48 | | Data directory: F:\
31/03/2014 13:51:48 | | Running under account Nicola
31/03/2014 13:51:48 | | Processor: 2 GenuineIntel Intel(R) Pentium(R) Dual CPU E2220 @ 2.40GHz [Family 6 Model 15 Stepping 13]
31/03/2014 13:51:48 | | 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 syscall nx lm tm2 pbe
31/03/2014 13:51:48 | | OS: Microsoft Windows 7: Ultimate x64 Edition, Service Pack 1, (06.01.7601.00)
31/03/2014 13:51:48 | | Memory: 7.00 GB physical, 14.00 GB virtual
31/03/2014 13:51:48 | | Disk: 9.57 GB total, 6.26 GB free
31/03/2014 13:51:48 | | Local time is UTC +2 hours
31/03/2014 13:51:48 | | VirtualBox version: 4.3.6
31/03/2014 13:51:48 | | CUDA: NVIDIA GPU 0: GeForce GTX 285 (driver version 331.82, CUDA version 6.0, compute capability 1.3, 1024MB, 878MB available, 1063 GFLOPS peak)
31/03/2014 13:51:48 | | CAL: ATI GPU 0: ATI Radeon HD 5400 series (Cedar) (CAL version 1.4.1741, 512MB, 479MB available, 208 GFLOPS peak)
31/03/2014 13:51:48 | | CAL: ATI GPU 1: ATI Radeon HD 5400 series (Cedar) (CAL version 1.4.1741, 512MB, 479MB available, 224 GFLOPS peak)
31/03/2014 13:51:48 | | OpenCL: NVIDIA GPU 0: GeForce GTX 285 (driver version 331.82, device version OpenCL 1.0 CUDA, 1024MB, 878MB available, 1063 GFLOPS peak)
31/03/2014 13:51:48 | | OpenCL: AMD/ATI GPU 0: ATI Radeon HD 5400 series (Cedar) (driver version 1124.2 (VM), device version OpenCL 1.2 AMD-APP (1124.2), 512MB, 479MB available, 208 GFLOPS peak)
31/03/2014 13:51:48 | | OpenCL: AMD/ATI GPU 1: ATI Radeon HD 5400 series (Cedar) (driver version 1124.2 (VM), device version OpenCL 1.2 AMD-APP (1124.2), 512MB, 479MB available, 224 GFLOPS peak)

As you can see, every GPU is correctly detected and is working properly, also on the third PC.
But this happens only upto the BOINC client v7.2.5, because every newer version does NOT recognise the GPUs anymore.

The following is what the BOINC client v7.2.42 says at the 1st startup after a clean installation:

30/03/2014 19:15:55 | | cc_config.xml not found - using defaults
30/03/2014 19:15:55 | | Starting BOINC client version 7.2.42 for windows_x86_64
30/03/2014 19:15:55 | | log flags: file_xfer, sched_ops, task
30/03/2014 19:15:55 | | Libraries: libcurl/7.25.0 OpenSSL/1.0.1 zlib/1.2.6
30/03/2014 19:15:55 | | Data directory: F:\
30/03/2014 19:15:55 | | Running under account Nicola
30/03/2014 19:15:55 | | GPU detection failed. error code 1
30/03/2014 19:15:55 | | No usable GPUs found
30/03/2014 19:15:55 | | Creating new client state file
30/03/2014 19:15:55 | | Host name: i7-950
30/03/2014 19:15:55 | | Processor: 8 GenuineIntel Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz [Family 6 Model 26 Stepping 5]
30/03/2014 19:15:55 | | 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 syscall nx lm vmx tm2 pbe
30/03/2014 19:15:55 | | OS: Microsoft Windows 7: Ultimate x64 Edition, Service Pack 1, (06.01.7601.00)
30/03/2014 19:15:55 | | Memory: 11.99 GB physical, 23.98 GB virtual
30/03/2014 19:15:55 | | Disk: 16.00 GB total, 15.89 GB free
30/03/2014 19:15:55 | | Local time is UTC +2 hours
30/03/2014 19:15:55 | | VirtualBox version: 4.3.6
30/03/2014 19:15:55 | | No general preferences found - using defaults
30/03/2014 19:15:55 | | Preferences:
30/03/2014 19:15:55 | | max memory usage when active: 6139.56MB
30/03/2014 19:15:55 | | max memory usage when idle: 11051.20MB
30/03/2014 19:15:55 | | max disk usage: 14.40GB
30/03/2014 19:15:55 | | don't use GPU while active
30/03/2014 19:15:55 | | suspend work if non-BOINC CPU load exceeds 25%
30/03/2014 19:15:55 | | (to change preferences, visit a project web site or select Preferences in the Manager)
30/03/2014 19:15:55 | | Not using a proxy
30/03/2014 19:15:55 | | This computer is not attached to any projects
30/03/2014 19:15:55 | | Visit http://boinc.berkeley.edu for instructions

And this is what it says at the 2nd startup, after I changed some settings:

30/03/2014 19:20:18 | | cc_config.xml not found - using defaults
30/03/2014 19:20:18 | | Starting BOINC client version 7.2.42 for windows_x86_64
30/03/2014 19:20:18 | | log flags: file_xfer, sched_ops, task
30/03/2014 19:20:18 | | Libraries: libcurl/7.25.0 OpenSSL/1.0.1 zlib/1.2.6
30/03/2014 19:20:18 | | Data directory: F:\
30/03/2014 19:20:18 | | Running under account Nicola
30/03/2014 19:20:18 | | GPU detection failed. error code 1
30/03/2014 19:20:18 | | No usable GPUs found
30/03/2014 19:20:18 | | Host name: i7-950
30/03/2014 19:20:18 | | Processor: 8 GenuineIntel Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz [Family 6 Model 26 Stepping 5]
30/03/2014 19:20:18 | | 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 syscall nx lm vmx tm2 pbe
30/03/2014 19:20:18 | | OS: Microsoft Windows 7: Ultimate x64 Edition, Service Pack 1, (06.01.7601.00)
30/03/2014 19:20:18 | | Memory: 11.99 GB physical, 23.98 GB virtual
30/03/2014 19:20:18 | | Disk: 16.00 GB total, 15.89 GB free
30/03/2014 19:20:18 | | Local time is UTC +2 hours
30/03/2014 19:20:18 | | VirtualBox version: 4.3.6
30/03/2014 19:20:18 | | No general preferences found - using defaults
30/03/2014 19:20:18 | | Reading preferences override file
30/03/2014 19:20:18 | | Preferences:
30/03/2014 19:20:18 | | max memory usage when active: 9823.29MB
30/03/2014 19:20:18 | | max memory usage when idle: 11051.20MB
30/03/2014 19:20:18 | | max disk usage: 15.79GB
30/03/2014 19:20:18 | | (to change preferences, visit a project web site or select Preferences in the Manager)
30/03/2014 19:20:18 | | Not using a proxy
30/03/2014 19:20:18 | | This computer is not attached to any projects
30/03/2014 19:20:18 | | Visit http://boinc.berkeley.edu for instructions

Every version above the v7.2.5 says the same things, on all of the three PCs.

Where's the problem? Could someone help me, please?
Thank you.

Best regards.

Nicola

---

This is caused by you telling the BOINC installer to make the BOINC Data directory the root directory of the F:\ drive or partition. Windows Vista, 7, 8 and 8.1 do not like it that files are written to the root directory of any drive or partition. That's what the error code 1 means.

30/03/2014 19:15:55 | | Data directory: F:\

So, it's best for you to uninstall BOINC now, then clean up the F: directory, make a BOINC directory in it and move all BOINC related files and directories into the BOINC directory, then reinstall BOINC and at the third screen of the installer choose Advanced. Next change the path to the Data directory to F:\BOINC\ and allow the installation to continue.

That will fix the problem for you.

Default directories in the BOINC directory: notices, projects, skin, slots, symbols
Files for the directory: account*.xml, acct_mgr*.xml, all_projects_list.xml, cc_config.xml, client_state.xml, client_state_prev.xml, coproc_info.xml, daily_xfer_history.xml, get_current_version.xml, get_projct_config.xml, global_prefs.xml, global_prefs_override.xml, gui_rpc_auth.cfg, job_log*.xml, lookup*.xml, master*.xml, remote_hosts.cfg, sched*.xml, statistics*.xml, std*.xml and time_stats_log

---

Hi,
goal! You were right!

I simply moved all the files from the root dir F:\ into a new subdir called F:\WorkUnits\, and I reinstalled BOINC v7.2.42, obviously specifying into its installer to make use of the new subdir. Now it recognises correctly all of the GPUs, on both of my working PCs.
Thank you very much.

Nicola

PS. You stated that I made a mistake when sending my question. Where did I wrong and how can I make it right next time?
Thanks again.

PS. You stated that I made a mistake when sending my question. Where did I wrong and how can I make it right next time?
Thanks again.

You sent me a private message, one that only I can see. Especially with things like this, we prefer that people post it in the forums instead, which is where I posted it for you. That so that any answer given can be used by the next person with the same question.

---