Hi Lawrence,

It was not happening on a laptop but a normal desktop. I use only the power energy saving for the screen. So no standby or hibernating.
When there is no human interactivity, the output to the screen stops after 5 minutes, the screen says 'No Signal' and powered off then.
To wake up the screen output, I usually press the Left-Shift button. I did so this time and saw on my taskbar that the BoincView-icon was red. I opened BoincView (V. 1.4.2) and could just see for one second the red line of this task with a status 'Computation error' before it finished and uploaded. So far in more detail what happened.

Some other system details:
CPU AM2+AMD Phenom X4 9350e (4 threads 2 GHz)
MB Asus AM2+ M3A78-EHM
256MB Graphics only from motherboard (I was already thinking this could sometimes cause the problem)
2048MB RAM
Prefs: 90% CPU allowed when system idle. When in use about 900MB free.
I use the BIOS built-in opportunity to overclock the FSB with 8%.
When I used the max. possibility of 10% my feeling was, that the system was slightly unstable then.
I have also running ABC@Home on that PC and in hundreds and hundreds of tasks never an erroneous result.

If you need more specific information, feel free and ask.

Hello Sekerob,

When it is my computers fault, there is no real problem, but perhaps there is a bug in the WCG/BOINC and/or Science software, so there he goes:

Result Log

<core_client_version>6.2.16</core_client_version>
<![CDATA[
<message>
- exit code -1073741819 (0xc0000005)
</message>
<stderr_txt>
Failed to get VersionInfo size: 2
LoadLibraryA( symsrv.dll ): GetLastError = 126
LoadLibraryA( srcsrv.dll ): GetLastError = 126


BOINC Windows Runtime Debugger Version 5.4.11

Dump Timestamp : 09/02/08 18:13:24
Debugger Engine : 4.0.5.0
Symbol Search Path: C:ProgramDataBOINCslots2;C:ProgramDataBOINCprojectswww.worldcommunitygrid.org;srv*C:Windows
\TEMP\symbols*http://msdl.microsoft.com/download/symbols;sr...inc.berkeley.edu/symstore


ModLoad: 00400000 01038000 C:\ProgramData\BOINC\projects\www.worldcommunitygrid.org\wcg_hpf2_rosetta_5.18_windows_intelx86 (5.1.1.0) (-nosymbols- Symbols Loaded)
File Version : 5, 1, 1, 0
Company Name : New York University Center For Comparative Functional Genomics in collaboration with the University of Washington and IBM Corporation
Product Name : Rosetta ab-initio World Community Grid client
Product Version:

ModLoad: 77660000 00160000 C:\Windows\SysWOW64\ntdll.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6001.18000

ModLoad: 75ad0000 00110000 C:\Windows\syswow64\kernel32.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6001.18000

ModLoad: 75360000 00032000 C:\Windows\system32\WINMM.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6000.16386

ModLoad: 75f30000 000aa000 C:\Windows\syswow64\msvcrt.dll (7.0.6001.18000) (-exported- Symbols Loaded)
File Version : 7.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 7.0.6001.18000

ModLoad: 75880000 000d0000 C:\Windows\syswow64\USER32.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6001.18000

ModLoad: 77030000 00090000 C:\Windows\syswow64\GDI32.dll (6.0.6001.18023) (-exported- Symbols Loaded)
File Version : 6.0.6001.18023 (vistasp1_gdr.080221-1537)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6001.18023

ModLoad: 770c0000 000c6000 C:\Windows\syswow64\ADVAPI32.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6001.18000

ModLoad: 75ce0000 000f0000 C:\Windows\syswow64\RPCRT4.dll (6.0.6001.18051) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6001.18000

ModLoad: 75810000 00060000 C:\Windows\syswow64\Secur32.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6001.18000

ModLoad: 75950000 00144000 C:\Windows\syswow64\ole32.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6000.16386

Get Product Name Failed.
ModLoad: 75be0000 0008d000 C:\Windows\syswow64\OLEAUT32.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000
Company Name : Microsoft Corporation
Product Name :
Product Version: 6.0.6001.18000

ModLoad: 753a0000 00039000 C:\Windows\system32\OLEACC.dll (4.2.5406.0) (-exported- Symbols Loaded)
File Version : 4.2.5406.0 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6001.18000

ModLoad: 75750000 00008000 C:\Windows\system32\VERSION.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6001.18000

ModLoad: 75fe0000 00060000 C:\Windows\system32\IMM32.DLL (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6001.18000

ModLoad: 76ce0000 000c8000 C:\Windows\syswow64\MSCTF.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6000.16386

ModLoad: 75c70000 00009000 C:\Windows\syswow64\LPK.DLL (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6001.18000

ModLoad: 75eb0000 0007d000 C:\Windows\syswow64\USP10.dll (1.626.6001.18000) (-exported- Symbols Loaded)
File Version : 1.0626.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft(R) Uniscribe Unicode script processor
Product Version: 1.0626.6001.18000

ModLoad: 70d00000 000cb000 C:\Windows\system32\OPENGL32.dll (6.0.6000.16386) (-exported- Symbols Loaded)
File Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6000.16386

ModLoad: 71e10000 00023000 C:\Windows\system32\GLU32.dll (6.0.6000.16386) (-exported- Symbols Loaded)
File Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6000.16386

ModLoad: 71b00000 000e5000 C:\Windows\system32\DDRAW.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6000.16386

ModLoad: 75710000 00006000 C:\Windows\system32\DCIMAN32.dll (6.0.6000.16386) (-exported- Symbols Loaded)
File Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6000.16386

ModLoad: 76040000 0018a000 C:\Windows\syswow64\SETUPAPI.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Besturingssysteem Microsoft® Windows®
Product Version: 6.0.6001.18000

ModLoad: 72ab0000 0000c000 C:\Windows\system32\dwmapi.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6001.18000

ModLoad: 71930000 000dc000 C:\Windows\system32\dbghelp.dll (6.0.6001.18000) (-exported- Symbols Loaded)
File Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Company Name : Microsoft Corporation
Product Name : Microsoft® Windows® Operating System
Product Version: 6.0.6001.18000



*** UNHANDLED EXCEPTION ****
Reason: Access Violation (0xc0000005) at address 0x0047D3BD write attempt to address 0x00000007

*** Dump of the Worker(offending) thread: ***
eax=00000007 ebx=02a3ccd8 ecx=0000006e edx=00000007 esi=00000053 edi=02a3dc90
eip=0047d3bd esp=02a3c25c ebp=02a3c418
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010202

ChildEBP RetAddr Args to Child
02a3c418 0047763d 02a3dc90 00000053 0000006e 02a3da60 wcg_hpf2_rosetta_5!+0x0
02a3ccb8 00bc0cb5 00000007 00000007 00f809dc ffffffff wcg_hpf2_rosetta_5!+0x0
02a3d9c4 00bbd0ca 00000001 00000053 0000006e 0000008d wcg_hpf2_rosetta_5!+0x0
02a3e844 009cbd89 00000053 0000006e 00000000 0000008e wcg_hpf2_rosetta_5!+0x0
02a3e9ec 009e27b6 02a3f4c8 02a3ea9c 77712926 12b17f0c wcg_hpf2_rosetta_5!+0x0
02a3eb38 009e1b69 02a3f4c8 3bc4db74 0000006e 00000053 wcg_hpf2_rosetta_5!+0x0
02a3ec40 009e0026 02a3edc0 009e0026 3dcccccd 00000000 wcg_hpf2_rosetta_5!+0x0
02a3edec 009da284 02a3f294 02a3f090 00000054 02a3f3a4 wcg_hpf2_rosetta_5!+0x0
02a3f190 009c2312 02a3f294 00000054 3a83126f 02a3f204 wcg_hpf2_rosetta_5!+0x0
02a3f3fc 00540910 02a3f670 02a3f464 00c646ec 00000058 wcg_hpf2_rosetta_5!+0x0
02a3f4dc 00bde8f5 00000003 42700000 00c646ec 02a3f840 wcg_hpf2_rosetta_5!+0x0
02a3fb38 00bd9101 00f748b0 40000001 01b6ff44 3fe45155 wcg_hpf2_rosetta_5!+0x0
02a3fbe4 00425173 00000011 0041bfd9 0153b740 01429560 wcg_hpf2_rosetta_5!+0x0
02a3fc80 0085d0df 00000000 0085e4dd 027589c8 00000000 wcg_hpf2_rosetta_5!+0x0
02a3fd38 0097c8ee 01258804 0174bab8 65726261 0078616c wcg_hpf2_rosetta_5!+0x0
02a3ff78 00da70ce fffffff0 00000000 00da70ce 75b5e3f3 wcg_hpf2_rosetta_5!+0x0
02a3ff94 776dcfed 00000000 677a67d0 00000000 00000000 wcg_hpf2_rosetta_5!+0x0
02a3ffd4 776dd1ff 00da70c0 00000000 00000000 00000000 ntdll!RtlCreateUserProcess+0x0
02a3ffec 00000000 00da70c0 00000000 00000000 00000000 ntdll!RtlCreateProcessParameters+0x0

*** Dump of the Timer thread: ***
eax=00000000 ebx=00000000 ecx=00000000 edx=00000000 esi=00000000 edi=00000000
eip=77680bc5 esp=02c3fee4 ebp=02c3ff88
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000202

ChildEBP RetAddr Args to Child
02c3ff88 75b5e3f3 00000000 02c3ffd4 776dcfed 00000000 ntdll!NtWaitForMultipleObjects+0x0
02c3ff94 776dcfed 00000000 671a67d0 00000000 00000000 kernel32!BaseThreadInitThunk+0x0
02c3ffd4 776dd1ff 75364383 00000000 00000000 00000000 ntdll!RtlCreateUserProcess+0x0
02c3ffec 00000000 75364383 00000000 00000000 02ef0000 ntdll!RtlCreateProcessParameters+0x0

*** Dump of the Graphics thread: ***
eax=00000001 ebx=0027fd50 ecx=00000000 edx=00000000 esi=00000000 edi=75898b09
eip=758b65b7 esp=0027fd08 ebp=0027fd28
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000202

ChildEBP RetAddr Args to Child
0027fd28 00da82ff 0027fd50 00000000 00000000 00000000 USER32!DrawFrameControl+0x0
0027feac 00dbf0d9 00000014 01551360 015514a0 00000094 wcg_hpf2_rosetta_5!+0x0
0027ff88 75b5e3f3 7efde000 0027ffd4 776dcfed 7efde000 wcg_hpf2_rosetta_5!+0x0
0027ff94 776dcfed 7efde000 65fe67d0 00000000 00000000 kernel32!BaseThreadInitThunk+0x0
0027ffd4 776dd1ff 00dbef6d 7efde000 00000000 00000000 ntdll!RtlCreateUserProcess+0x0
0027ffec 00000000 00dbef6d 7efde000 00000000 78746341 ntdll!RtlCreateProcessParameters+0x0

Exiting...

</stderr_txt>
]]>

Cheers and good luck

Hello Sekerob,

Thanks for the links. On my PC this error is a rather rare phenomenon until now. So I think it's not the hardware.
Perhaps a coincidence of software state, 8% overclocking and the CPU has to reactivate the graphics output.
I'll get an eye on it and I keep on crunching ... already waiting for Phase2 of HCMD.

Thanks again.

Do not try to change everything at once to find the cause of a problem and a bug you cannot reproduce is not a bug .

So first of all I stopped the Windows Screen Power Management and I will use the HIPM (Human Interface Power Management). Because it not happened on a laptop this is possible.
After running out of WCG tasks (within approx. 10 hours) and acknowledging the results, I will reset the WCG project for a clean start and give all four threads a mixture of WCG projects.

Don't forget ZERO errors on 530 ABC WU's under the same conditions.