Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 02:16:09, on 25/08/2014
Platform: Windows 7 SP1 (WinNT 6.00.3505)
MSIE: Internet Explorer v9.00 (9.00.8112.16455)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskhost.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Common Files\Adobe\ARM\1.0\AdobeARM.exe
C:\Windows\System32\igfxtray.exe
C:\Windows\System32\hkcmd.exe
C:\Windows\System32\igfxpers.exe
C:\Program Files\PDF24\pdf24.exe
C:\Program Files\Common Files\Java\Java Update\jusched.exe
C:\Program Files\Rising\AntiSpyware\RSTray.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\Free Download Manager\fdm.exe
C:\Users\Administrator\AppData\Local\MailRu\MailRuUpdater.exe
C:\Windows\system32\igfxsrvc.exe
C:\extension\update.exe
C:\Users\Administrator\AppData\Local\buenosearch\buenosearch\1.3.8.2\buenosearch.exe
C:\Program Files\OpenOffice.org 3\program\soffice.exe
C:\Program Files\OpenOffice.org 3\program\soffice.bin
C:\Program Files\Optimizer Pro\OptProSmartScan.exe
C:\Program Files\Optimizer Pro\OptProReminder.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\ProgramData\Application\Offertz\oftzapp.exe
C:\Users\Administrator\Desktop\HiJackThis.exe
C:\Windows\system32\SearchProtocolHost.exe
C:\Windows\system32\SearchFilterHost.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://webalta.ru/search
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://webalta.ru/search
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://webalta.ru/search
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.sweet-page.com/?type=hp&ts=1408809794&from=cor&uid=WDCXWD3200BPVT-22ZEST0_WD-WX71A611069910699
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://www.sweet-page.com/web/?type=ds&ts=1408809794&from=cor&uid=WDCXWD3200BPVT-22ZEST0_WD-WX71A611069910699&q={searchTerms}
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.sweet-page.com/web/?type=ds&ts=1408809794&from=cor&uid=WDCXWD3200BPVT-22ZEST0_WD-WX71A611069910699&q={searchTerms}
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.sweet-page.com/?type=hp&ts=1408809794&from=cor&uid=WDCXWD3200BPVT-22ZEST0_WD-WX71A611069910699
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://webalta.ru/search
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: (no name) - {D8278076-BC68-4484-9233-6E7F1628B56C} - (no file)
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre7\bin\ssv.dll
O2 - BHO: Windows Live ID Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Rising PC Doctor - {98B7C13A-E9CD-4959-8B46-FBEAB41E42A8} - C:\Windows\system32\UrlFilter.dll
O2 - BHO: SkypeIEPluginBHO - {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: Free Download Manager - {CC59E0F9-7E43-44FA-9FAA-8377850BF205} - C:\Program Files\Free Download Manager\iefdm2.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre7\bin\jp2ssv.dll
O3 - Toolbar: ????? WebAlta - {fe704bf8-384b-44e1-8cf2-8dbeb3637a8a} - mscoree.dll (file missing)
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [IgfxTray] C:\Windows\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\Windows\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\Windows\system32\igfxpers.exe
O4 - HKLM\..\Run: [PDFPrint] C:\Program Files\PDF24\pdf24.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Common Files\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [runeip] "C:\Program Files\Rising\AntiSpyware\rstray.exe" /startup
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [] C:\Program Files\Samsung\Kies\External\FirmwareUpdate\KiesPDLR.exe
O4 - HKCU\..\Run: [Free Download Manager] "C:\Program Files\Free Download Manager\fdm.exe" -autorun
O4 - HKCU\..\Run: [MailRuUpdater] C:\Users\Administrator\AppData\Local\MailRu\MailRuUpdater.exe
O4 - HKCU\..\Run: [plug] C:\extension\update.exe
O4 - HKCU\..\Run: [buenosearch] C:\Users\Administrator\AppData\Local\buenosearch\buenosearch\1.3.8.2\buenosearch.exe
O4 - HKCU\..\Run: [Optimizer Pro] C:\Program Files\Optimizer Pro\OptProLauncher.exe
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-19\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-20\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'SERVIZIO DI RETE')
O4 - Startup: OpenOffice.org 3.4.1.lnk = C:\Program Files\OpenOffice.org 3\program\quickstart.exe
O8 - Extra context menu item: Scarica con Free Download Manager - file://C:\Program Files\Free Download Manager\dllink.htm
O8 - Extra context menu item: Scarica i video con Free Download Manager - file://C:\Program Files\Free Download Manager\dlfvideo.htm
O8 - Extra context menu item: Scarica selezionati con Free Download Manager - file://C:\Program Files\Free Download Manager\dlselected.htm
O8 - Extra context menu item: Scarica tutto con Free Download Manager - file://C:\Program Files\Free Download Manager\dlall.htm
O9 - Extra button: @C:\Program Files\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1004 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: @C:\Program Files\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1003 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Skype Click to Call settings - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O10 - Unknown file in Winsock LSP: c:\program files\common files\microsoft shared\windows live\wlidnsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\common files\microsoft shared\windows live\wlidnsp.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O18 - Protocol: skypec2c - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O20 - AppInit_DLLs: kmon.dll
O23 - Service: Adobe Acrobat Update Service (AdobeARMservice) - Adobe Systems Incorporated - C:\Program Files\Common Files\Adobe\ARM\1.0\armsvc.exe
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\Windows\system32\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: IconMan_R - Realsil Microelectronics Inc. - C:\Program Files\Realtek\Realtek PCIE Card Reader\RIconMan.exe
O23 - Service: Offertz Service (oftzsvc) - Unknown owner - C:\ProgramData\Application\Offertz\oftzscv.exe
O23 - Service: Offertz Upd (oftzupd) - Unknown owner - c:\programdata\services\updater\oftzupd.exe
O23 - Service: Skype Updater (SkypeUpdate) - Skype Technologies - C:\Program Files\Skype\Updater\Updater.exe

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End of file - 8313 bytes

Metti il log nella sezione sicurezza virus.

Una ripulita con ADWCleaner non farebbe male.
http://download.html.it/software/adwcleaner/

Comunque è un acer aspire one..! niente di che..! e non l'ho quasi mai usato perchè mi ha sempre fatto arrabbiare...!!!

Per me hai fatto male a installare Seven. Sicura che sia buono?
Io ti consiglierei caldamente di fare un ripristino di W8. E' un ottimo sistema.
Pensaci.
La descrizione dei problemi che presenta è scarna.
Al

Non necessariamente.
Trattandosi di un Notebook deve avere la partizione di ripristino (Recovery) che attivata riporta il computer allo stato di quando è uscito dalla fabbrica. L'attivazione del ripristino generalmente è una procedura semplice. Si tratta di pigiare qualche tasto funzione particolare in fase di avvio e poi dare alcuni consensi. Questa procedura la trovi sul manuale del PC.
oppure segui questa guida:
http://www.informaticahermes.it/blog/item/235-ripristino-acer-aspire-one.html
e questo video:
https://www.youtube.com/watch?v=Kb7BaLIEpHU
Al.

La mia dimestichezza con questi programmi è scarsa e ho fatto certamente un po' di confusione.
L'importante è che denuta abbia cancellato quei malaware "made in Ru."
Putin ha ricordato a tutti che la Russia è una potenza nucleare. Meglio starci alla larga.
Al.