Buongiorno, il pc dei miei genitori è estremamente lento, ci mette tanto tempo ad aprire pagine web e cartelle, si parla anche di minuti d'attesa.
ho notato che la cpu è spesso quasi al massimo.
Ho fatto una scansione con hijackthis, vi posto il log.
Qualcuno mi può aiutare?, grazie.


Logfile of HiJackThis Fork by Alex Dragokas v.2.9.0.18

Platform: x64 Windows 10 (Home), 10.0.17134.706 (ReleaseId: 1803), Service Pack: 0
Time: 16.09.2019 - 17:03 (UTC+02:00)
Language: OS: Italian (0x410). Display: Italian (0x410). Non-Unicode: English (0x409)
Elevated: Yes
Ran by: Rachele (group: Administrator) on LAPTOP-LDGDNHSL, FirstRun: yes

Chrome: 73.0.3683.103
Edge: 11.0.17134.677
Internet Explorer: 11.0.17134.1
Default: "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" -- "%1" (Google Chrome)

Boot mode: Normal

Running processes:
Number | Path
1 C:\Program Files (x86)\Acer\AOP Framework\BackgroundAgent.exe
1 C:\Program Files (x86)\Acer\AOP Framework\CCDMonitorService.exe
1 C:\Program Files (x86)\Acer\AOP Framework\acer\ccd.exe
1 C:\Program Files (x86)\Acer\Care Center\ACCStd.exe
1 C:\Program Files (x86)\Acer\Care Center\LiveUpdateChecker.exe
1 C:\Program Files (x86)\Acer\abDocs\abDocsDllLoaderMonitor.exe
1 C:\Program Files (x86)\Amazon\Amazon Assistant\amazonAssistantService.exe
1 C:\Program Files (x86)\Bonjour\mDNSResponder.exe
1 C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe
1 C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\armsvc.exe
8 C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
1 C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
1 C:\Program Files (x86)\WildTangent Games\App\GamesAppIntegrationService.exe
1 C:\Program Files\Acer\Acer Power Management\ePowerEvent.exe
1 C:\Program Files\Acer\Acer Power Management\ePowerSvc.exe
1 C:\Program Files\Acer\Acer Power Management\ePowerTray.exe
1 C:\Program Files\Acer\Acer Quick Access\QAAdminAgent.exe
1 C:\Program Files\Acer\Acer Quick Access\QAAgent.exe
1 C:\Program Files\Acer\Acer Quick Access\QALSvc.exe
1 C:\Program Files\Acer\Acer Quick Access\QALockHandler.exe
1 C:\Program Files\Acer\Acer Quick Access\QASvc.exe
1 C:\Program Files\Bitdefender Agent\ProductAgentService.exe
1 C:\Program Files\Bitdefender\Bitdefender Device Management\DevMgmtService.exe
1 C:\Program Files\Bitdefender\Bitdefender Security\bdagent.exe
2 C:\Program Files\Bitdefender\Bitdefender Security\bdservicehost.exe
1 C:\Program Files\Bitdefender\Bitdefender Security\bdwtxcr.exe
1 C:\Program Files\Bitdefender\Bitdefender Security\downloader.exe
1 C:\Program Files\Bitdefender\Bitdefender Security\updatesrv.exe
1 C:\Program Files\Bitdefender\Bitdefender Security\vsserv.exe
1 C:\Program Files\Bitdefender\Bitdefender Security\vsservp.exe
1 C:\Program Files\Common Files\Bitdefender\SetupInformation\Bitdefender RedLine\bdredline.exe
1 C:\Program Files\Realtek\Audio\HDA\RAVCpl64.exe
1 C:\Program Files\Windows Defender\MSASCuiL.exe
1 C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.48.51.0_x64__kzf8qxf38zg5c\SkypeApp.exe
1 C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.48.51.0_x64__kzf8qxf38zg5c\SkypeBackgroundHost.exe
1 C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20174.0_x64__8wekyb3d8bbwe\HxTsr.exe
1 C:\Program Files\rempl\sedlauncher.exe
1 C:\Program Files\rempl\sedsvc.exe
3 C:\Users\Rachele\AppData\Local\Google\Chrome\User Data\SwReporter\42.206.200.3\software_reporter_tool.exe
2 C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\StandaloneUpdater\OneDriveSetup.exe
1 C:\Users\Rachele\Desktop\HiJackThis.exe
1 C:\Windows\System32\ApplicationFrameHost.exe
1 C:\Windows\System32\BtwRSupportService.exe
2 C:\Windows\System32\CompatTelRunner.exe
1 C:\Windows\System32\DeviceCensus.exe
1 C:\Windows\System32\MusNotifyIcon.exe
7 C:\Windows\System32\RuntimeBroker.exe
1 C:\Windows\System32\SearchIndexer.exe
1 C:\Windows\System32\SecurityHealthService.exe
1 C:\Windows\System32\SgrmBroker.exe
4 C:\Windows\System32\SrTasks.exe
1 C:\Windows\System32\SystemSettingsBroker.exe
1 C:\Windows\System32\atiesrxx.exe
1 C:\Windows\System32\audiodg.exe
1 C:\Windows\System32\backgroundTaskHost.exe
1 C:\Windows\System32\cmd.exe
10 C:\Windows\System32\conhost.exe
2 C:\Windows\System32\csrss.exe
1 C:\Windows\System32\ctfmon.exe
1 C:\Windows\System32\dasHost.exe
2 C:\Windows\System32\dllhost.exe
1 C:\Windows\System32\dwm.exe
2 C:\Windows\System32\fontdrvhost.exe
1 C:\Windows\System32\lsass.exe
1 C:\Windows\System32\mshta.exe
1 C:\Windows\System32\services.exe
1 C:\Windows\System32\sihost.exe
1 C:\Windows\System32\smartscreen.exe
1 C:\Windows\System32\smss.exe
1 C:\Windows\System32\spoolsv.exe
24 C:\Windows\System32\svchost.exe
2 C:\Windows\System32\taskhostw.exe
1 C:\Windows\System32\wbem\WmiApSrv.exe
2 C:\Windows\System32\wbem\WmiPrvSE.exe
3 C:\Windows\System32\wbem\unsecapp.exe
1 C:\Windows\System32\wermgr.exe
1 C:\Windows\System32\wininit.exe
1 C:\Windows\System32\winlogon.exe
1 C:\Windows\System32\wuauclt.exe
1 C:\Windows\SystemApps\Microsoft.LockApp_cw5n1h2txyewy\LockApp.exe
1 C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
1 C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
1 C:\Windows\Temp\75.0.3770.100_chrome_installer.exed3530f6
2 C:\Windows\Temp\CR_D8A2F.tmp\setup.exe
1 C:\Windows\WinSxS\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.17134.580_none_ead976921d8220dc\TiWorker.exe
1 C:\Windows\explorer.exe
1 C:\Windows\servicing\TrustedInstaller.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main: [Default_Page_URL] = http://acer15.msn.com/?pc=ACTE
R0 - HKCU\Software\Microsoft\Internet Explorer\Main: [Start Page] = http://acer15.msn.com/?pc=ACTE
O2 - HKLM\..\BHO: Portafoglio di Bitdefender - {1DAC0C53-7D23-4AB3-856A-B04D98CD982A} - C:\Program Files\Bitdefender\Bitdefender Security\pmbxie.dll
O2-32 - HKLM\..\BHO: Portafoglio di Bitdefender - {1DAC0C53-7D23-4AB3-856A-B04D98CD982A} - C:\Program Files\Bitdefender\Bitdefender Security\Antispam32\pmbxie.dll
O3 - HKLM\..\Toolbar: Portafoglio di Bitdefender - {1DAC0C53-7D23-4AB3-856A-B04D98CD982A} - C:\Program Files\Bitdefender\Bitdefender Security\pmbxie.dll
O3-32 - HKLM\..\Toolbar: Portafoglio di Bitdefender - {1DAC0C53-7D23-4AB3-856A-B04D98CD982A} - C:\Program Files\Bitdefender\Bitdefender Security\Antispam32\pmbxie.dll
O4 - HKCU\..\RunOnce: [Delete Cached Standalone Update Binary] = C:\WINDOWS\system32\cmd.exe /q /c del /q "C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\StandaloneUpdater\OneDriveSetup.exe"
O4 - HKCU\..\RunOnce: [Delete Cached Update Binary] = C:\WINDOWS\system32\cmd.exe /q /c del /q "C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\Update\OneDriveSetup.exe"
O4 - HKCU\..\RunOnce: [FlashPlayerUpdate] = C:\WINDOWS\SysWOW64\Macromed\Flash\FlashUtil32_32_0_0_223_pepper.exe -update pepperplugin
O4 - HKCU\..\RunOnce: [Uninstall 19.086.0502.0006\amd64] = C:\WINDOWS\system32\cmd.exe /q /c rmdir /s /q "C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\19.086.0502.0006\amd64"
O4 - HKCU\..\RunOnce: [Uninstall 19.086.0502.0006] = C:\WINDOWS\system32\cmd.exe /q /c rmdir /s /q "C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\19.086.0502.0006"
O4 - HKLM\..\Run: [RTHDVCPL] = C:\Program Files\Realtek\Audio\HDA\RAVCpl64.exe -s
O4-32 - HKLM\..\Run: [StartCCC] = C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\amd64\CLIStart.exe MSRun
O4-32 - HKLM\..\Run: [abDocsDllLoader] = C:\Program Files (x86)\Acer\abDocs\abDocsDllLoader.exe
O17 - DHCP DNS 1: 213.205.32.70
O17 - DHCP DNS 2: 213.205.36.70
O21 - HKLM\..\ShellIconOverlayIdentifiers\ ACloudSynced: ACloudSynced Class - {5CCE71FA-9F61-4F24-9CD1-98D819B40D68} - C:\Program Files (x86)\Acer\shellext\x64\shellext_win.dll
O21 - HKLM\..\ShellIconOverlayIdentifiers\ ACloudSyncing: ACloudSyncing Class - {C1E1456F-C2D8-4C96-870D-35F1E13941EE} - C:\Program Files (x86)\Acer\shellext\x64\shellext_win.dll
O21 - HKLM\..\ShellIconOverlayIdentifiers\ ACloudToBeSynced: ACloudToBeSynced Class - {307523FA-DDC0-4068-983F-2A6B34627744} - C:\Program Files (x86)\Acer\shellext\x64\shellext_win.dll
O22 - Task (.job): (Ready) WpsNotifyTask_Administrator.job - C:\Program Files (x86)\Kingsoft\WPS Office\9.1.0.5113\wtoolex\wpsnotify.exe -from=task
O22 - Task (.job): (Ready) WpsUpdateTask_Administrator.job - C:\Program Files (x86)\Kingsoft\WPS Office\9.1.0.5113\wtoolex\wpsupdate.exe -from=task
O23 - Service R2: Servizio Bonjour - (Bonjour Service) - C:\Program Files (x86)\Bonjour\mDNSResponder.exe
O23 - Service R2: AMD External Events Utility - C:\WINDOWS\system32\atiesrxx.exe
O23 - Service R2: Adobe Acrobat Update Service - (AdobeARMservice) - C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\armsvc.exe
O23 - Service R2: Amazon Assistant Service - C:\Program Files (x86)\Amazon\Amazon Assistant\amazonAssistantService.exe
O23 - Service R2: Bitdefender Auxiliary Service - (BDAuxSrv) - C:\Program Files\Bitdefender\Bitdefender Security\bdservicehost.exe "settings\services\configs\bdauxsrv_config.json"
O23 - Service R2: Bitdefender Desktop Update Service - (UPDATESRV) - C:\Program Files\Bitdefender\Bitdefender Security\updatesrv.exe /service
O23 - Service R2: Bitdefender Device Management Service - (DevMgmtService) - C:\Program Files\Bitdefender\Bitdefender Device Management\DevMgmtService.exe
O23 - Service R2: Bitdefender Protected Service - (BDProtSrv) - C:\Program Files\Bitdefender\Bitdefender Security\bdservicehost.exe "settings\services\configs\bdprotsrv_config.json"
O23 - Service R2: Bitdefender Protected Service - (vsservp) - C:\Program Files\Bitdefender\Bitdefender Security\vsservp.exe
O23 - Service R2: Bitdefender RedLine Service - (bdredline) - C:\Program Files\Common Files\Bitdefender\SetupInformation\Bitdefender RedLine\bdredline.exe
O23 - Service R2: Bitdefender Virus Shield - (VSSERV) - C:\Program Files\Bitdefender\Bitdefender Security\vsserv.exe /service
O23 - Service R2: Bluetooth Driver Management Service - (BcmBtRSupport) - C:\WINDOWS\system32\BtwRSupportService.exe
O23 - Service R2: CCDMonitorService - C:\Program Files (x86)\Acer\AOP Framework\CCDMonitorService.exe
O23 - Service R2: GamesAppIntegrationService - C:\Program Files (x86)\WildTangent Games\App\GamesAppIntegrationService.exe
O23 - Service R2: ProductAgentService - C:\Program Files\Bitdefender Agent\ProductAgentService.exe
O23 - Service R2: Windows Remediation Service - (sedsvc) - C:\Program Files\rempl\sedsvc.exe
O23 - Service R3: Quick Access Local Service - (QALSvc) - C:\Program Files\Acer\Acer Quick Access\QALSvc.exe
O23 - Service R3: Quick Access Service - (QASvc) - C:\Program Files\Acer\Acer Quick Access\QASvc.exe
O23 - Service R3: ePower Service - (ePowerSvc) - C:\Program Files\Acer\Acer Power Management\ePowerSvc.exe
O23 - Service S2: Servizio Google Update (gupdate) - (gupdate) - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe /svc
O23 - Service S2: WPS Office Update Service - (Kingsoft_WPS_UpdateService) - C:\Program Files (x86)\Kingsoft\WPS Office\9.1.0.5113\wtoolex\wpsupdatesvr.exe
O23 - Service S3: Adobe Flash Player Update Service - (AdobeFlashPlayerUpdateSvc) - C:\WINDOWS\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service S3: GamesAppService - C:\Program Files (x86)\WildTangent Games\App\GamesAppService.exe
O23 - Service S3: Google Chrome Elevation Service - (GoogleChromeElevationService) - C:\Program Files (x86)\Google\Chrome\Application\73.0.3683.103\elevation_service.exe
O23 - Service S3: Servizio Google Update (gupdatem) - (gupdatem) - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe /medsvc
O23 - Service S3: User Experience Improvement Program - (UEIPSvc) - C:\Program Files\Acer\User Experience Improvement Program\Framework\UBTService.exe


--
End of file - Time spent: 176,5 sec. - 24024 bytes, CRC32: FFFFFFFF. Sign: �

i genitori difficilmente fanno pulizie.
http://forum.aiutamici.com/yaf_postst96025_ELIMINARE-PAGINE-PUBBLICITARIE-E-PORCHERIE-VARIE-E-PULIRE-SISTEMA.aspx
fai quanto sopra e poi riposta il log di hjiact.

Oltre alle pulizie segnalate che servono sempre, hai 2 antivirus che non vanno assolutamente bene, elimina completamente Bitdefender e lascia Defender che è l'antivirus incluso nel sistema.
Per le pulizie del link segnalato, lascia perdere Privazer, non è per tutti, basta Ccleaner, la deframmentazione non è necessaria in quanto win 10 la fa in automatico.

Poi fixa ed elimina le seguenti voci:

O2 - HKLM\..\BHO: Portafoglio di Bitdefender - {1DAC0C53-7D23-4AB3-856A-B04D98CD982A} - C:\Program Files\Bitdefender\Bitdefender Security\pmbxie.dll
O2-32 - HKLM\..\BHO: Portafoglio di Bitdefender - {1DAC0C53-7D23-4AB3-856A-B04D98CD982A} - C:\Program Files\Bitdefender\Bitdefender Security\Antispam32\pmbxie.dll
O3 - HKLM\..\Toolbar: Portafoglio di Bitdefender - {1DAC0C53-7D23-4AB3-856A-B04D98CD982A} - C:\Program Files\Bitdefender\Bitdefender Security\pmbxie.dll
O3-32 - HKLM\..\Toolbar: Portafoglio di Bitdefender - {1DAC0C53-7D23-4AB3-856A-B04D98CD982A} - C:\Program Files\Bitdefender\Bitdefender Security\Antispam32\pmbxie.dll
O4 - HKCU\..\RunOnce: [Delete Cached Standalone Update Binary] = C:\WINDOWS\system32\cmd.exe /q /c del /q "C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\StandaloneUpdater\OneDriveSetup.exe"
O4 - HKCU\..\RunOnce: [Delete Cached Update Binary] = C:\WINDOWS\system32\cmd.exe /q /c del /q "C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\Update\OneDriveSetup.exe"
O4 - HKCU\..\RunOnce: [FlashPlayerUpdate] = C:\WINDOWS\SysWOW64\Macromed\Flash\FlashUtil32_32_0_0_223_pepper.exe -update pepperplugin
O4 - HKCU\..\RunOnce: [Uninstall 19.086.0502.0006\amd64] = C:\WINDOWS\system32\cmd.exe /q /c rmdir /s /q "C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\19.086.0502.0006\amd64"
O4 - HKCU\..\RunOnce: [Uninstall 19.086.0502.0006] = C:\WINDOWS\system32\cmd.exe /q /c rmdir /s /q "C:\Users\Rachele\AppData\Local\Microsoft\OneDrive\19.086.0502.0006"
O4 - HKLM\..\Run: [RTHDVCPL] = C:\Program Files\Realtek\Audio\HDA\RAVCpl64.exe -s
O4-32 - HKLM\..\Run: [StartCCC] = C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\amd64\CLIStart.exe MSRun
O4-32 - HKLM\..\Run: [abDocsDllLoader] = C:\Program Files (x86)\Acer\abDocs\abDocsDllLoader.exe
Le voci 04 sono tutti programmi in avvio automatico che rallenrano inutilmente il pc, i programmi non vengono eliminati ma viene solo dsattivato l'avvio automatico.
Poi come ti è gia stato suggerito, rifai una scansione con HJT e posta il nuovo log, controlliamo cos'è rimasto.
Ciao e buon lavoro.

CCleaner per le pulizie normali,PrivaZer per quelle approfondite.

http://software.aiutamici.com/software?ID=11223
ccleaner