ho il pc adibito ad uso familiare che ha ricominciato a fare i capricci:

al momento dell'avvio a volte non arriva alla schermata iniziale

a volte si avvia normalmente e cosi' va bene

a volte sparisce l'immagine video e poi riappare dopo un po oppure adirittura non appare piu'

a volte si vede in bianco e nero

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penso che il tutto sia dovuto alla scheda video (software)

vi faccio un h.j. per vedere la caratteristiche del pc che ho...

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\PC Tools Firewall Plus\FirewallGUI.exe
C:\Programmi\Acronis\TrueImage\TrueImageMonitor.exe
C:\Programmi\Acronis\TrueImage\TimounterMonitor.exe
C:\Programmi\File comuni\Acronis\Schedule2\schedhlp.exe
C:\WINDOWS\vVX1000.exe
C:\Programmi\Panda Security\Panda Cloud Antivirus\PSUNMain.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIBZE.EXE
C:\Programmi\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Programmi\File comuni\Acronis\Schedule2\schedul2.exe
C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Documents and Settings\All Users\Dati applicazioni\EPSON\EPW!3 SSRP\E_S30RP1.EXE
C:\Programmi\Microsoft LifeCam\MSCamS32.exe
C:\Programmi\Panda Security\Panda Cloud Antivirus\PSANHost.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\Programmi\PC Tools Firewall Plus\FWService.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
C:\Programmi\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.libero.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: Supporto di collegamento per Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - (no file)
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Programmi\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Programmi\Google\GoogleToolbarNotifier\5.5.5126.1836\swg.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programmi\Java\jre6\bin\jp2ssv.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Programmi\Google\Google Toolbar\GoogleToolbar_32.dll
O4 - HKLM\..\Run: [00PCTFW] "C:\Programmi\PC Tools Firewall Plus\FirewallGUI.exe" -s
O4 - HKLM\..\Run: [TrueImageMonitor.exe] C:\Programmi\Acronis\TrueImage\TrueImageMonitor.exe
O4 - HKLM\..\Run: [AcronisTimounterMonitor] C:\Programmi\Acronis\TrueImage\TimounterMonitor.exe
O4 - HKLM\..\Run: [Acronis Scheduler2 Service] "C:\Programmi\File comuni\Acronis\Schedule2\schedhlp.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime Alternative\qttask.exe" -atboottime
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [VX1000] C:\WINDOWS\vVX1000.exe
O4 - HKLM\..\Run: [PSUNMain] "C:\Programmi\Panda Security\Panda Cloud Antivirus\PSUNMain.exe" /Traybar
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [EPSON Stylus D92 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIBZE.EXE /FU "C:\DOCUME~1\DAVIDE~1\IMPOST~1\Temp\E_S7.tmp" /EF "HKCU"
O4 - HKCU\..\Run: [swg] "C:\Programmi\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Google Sidewiki... - res://C:\Programmi\Google\Google Toolbar\Component\GoogleToolbarDynamic_mui_en_89D8574934B26AC4.dll/cmsidewiki.html
O9 - Extra button: Inserisci blog - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: Inserisci &blog in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O17 - HKLM\System\CCS\Services\Tcpip\..\{D4CC7554-E1D7-4281-AB27-3D76D5F1963F}: NameServer = 192.168.0.1
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - (no file)
O20 - Winlogon Notify: avgrsstarter - avgrsstx.dll (file missing)
O23 - Service: Acronis Scheduler2 Service (AcrSch2Svc) - Acronis - C:\Programmi\File comuni\Acronis\Schedule2\schedul2.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Programmi\File comuni\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: EPSON V3 Service4(01) (EPSON_PM_RPCV4_01) - SEIKO EPSON CORPORATION - C:\Documents and Settings\All Users\Dati applicazioni\EPSON\EPW!3 SSRP\E_S30RP1.EXE
O23 - Service: Servizio di Google Update (gupdate) (gupdate) - Google Inc. - C:\Programmi\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\1150\Intel 32\IDriverT.exe
O23 - Service: NanoServiceMain - Panda Security, S.L. - C:\Programmi\Panda Security\Panda Cloud Antivirus\PSANHost.exe
O23 - Service: NBService - Nero AG - C:\Programmi\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Programmi\File comuni\Ahead\Lib\NMIndexingService.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: PC Tools Firewall Plus (PCToolsFirewallPlus) - PC Tools - C:\Programmi\PC Tools Firewall Plus\FWService.exe

--
End of file - 7377 bytes

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Property Value
Display Adapter NVIDIA GeForce2 MX/MX 400
Video Processor GeForce2 MX/MX 400
Video memory size 64 MBytes
Adapter DAC Type Integrated RAMDAC
BIOS String Version 3.11.01.48.00
BIOS Date 06/21/02
Display Drivers nv4_disp.dll
Driver Version 6.13.10.4072
Driver Date 2002-09-27 14:38:00
Inf File Name oem33.inf
Inf Section nv4

---

Property Value
Number of CPU(s) One Physical Processor / One Core / 2 Logical Processors / 32 bits
CPU Full Name Intel(R) Pentium(R) 4 CPU 3.00GHz
CPU Name Intel Pentium 4
CPU Code Name Prescott
Platform Name Socket 478 mPGA
Revision D0
Technology 90 nm
Instructions MMX, SSE, SSE2, SSE3, HT
Original Clock 3000 MHz
Original System Clock 200 MHz
Original Multiplier 15.0
CPU Clock 3000 MHz
System Clock 200.0 MHz
FSB 799.9 MHz
Core 0 Speed 2999.5 MHz
Core 0 Multiplier 15.0
L1 Data Cache 16 KBytes
L1 Trace Cache 12 Kuops
L2 Cache 1024 KBytes

---

Property Value
Computer Name LINARI-5R78KUY0
Workgroup Name MSHOME
Logon Server \\LINARI-5R78KUY0

Socket Version 2.0
Highest Version 2.2
Description WinSock 2.0
System Status Running
Host Name LINARI-5R78KUY0
IP Address 192.168.0.10 00:19:66:8B:EC:1E
Windows Firewall Inactive
DNS Servers 192.168.0.1 IP: 192.168.0.1
Node Type 0
IP Routing Enabled No
WINS Proxy Enabled No
NetBIOS Resolution Uses DNS No

Ethernet Adapter {D4CC7554-E1D7-4281-AB27-3D76D5F1963F}
Description NIC Fast Ethernet PCI Realtek RTL8139 Family - Miniport dell'Utilità di pianificazione pacchetti
Physical Address 00-19-66-8B-EC-1E
DHCP Enabled No
DHCP Server N/A
IP Address 192.168.0.10
Subnet Mask 255.255.255.0
Default Gateway 192.168.0.1 IP: 192.168.0.1
WINS Enabled No
Primary WINS Server N/A
Secondary WINS Server N/A

ARP Table
IP Address MAC Address Type
192.168.0.1 00-22-3f-6a-04-72 Dynamic

Controlla bene se non è per caso il Monitor che ti sta abbandonando...

ottima idea.