Probleme fenetre pub

Bonjour,
j'ai un problème avec mon ordi, un Sony Vaio récent sous Windows 8, depuis un moment j'ai des fenêtres de pub qui s'ouvrent tout en fermant ou remplaçant mes pages ouverte que sa soit sur Google chrome ou Firefox , j'ai fait un nettoyage avec Ccleanr et ADwear et puis un scan log avec HijackThis .
Merci de m'aider a analyser le scan ci dessou
Scan log. Started at 12.03.2014 20:11:09
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Start Processes scan
Completed Processes scan
Total items scanned: 27
Items found: 0
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Start Registry scan
Name: UNKNOWN - PMBVolumeWatcher [ c:\program files (x86)\sony\playmemories
home\pmbvolumewatcher.exe ]
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Name: UNKNOWN - Adobe ARM [ "c:\program files (x86)\common
files\adobe\arm\1.0\adobearm.exe ]
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Name: UNKNOWN - BDRegion [ c:\program files (x86)\cyberlink\shared files\brs.exe ]
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Name: UNKNOWN - Intel AppUp(SM) center [ "c:\program files
(x86)\intel\intelappstore\bin\ismagent.exe ]
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Name: UNKNOWN - mbot_fr_259 [ ]
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Name: UNKNOWN - DllName [ c:\windows\syswow64\iedkcs32.dll ]SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{4CFB60C1-FAA6-47f1-
89AA-0B18730C9FD3}
Name: UNKNOWN - DisplayName [ @c:\windows\syswow64\iedkcs32.dll,-3051 ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{4CFB60C1-FAA6-47f1-
89AA-0B18730C9FD3}
Name: UNKNOWN - DllName [ c:\windows\syswow64\iedkcs32.dll ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{7B849a69-220F-451EB3FE-2CB811AF94AE}
Name: UNKNOWN - DisplayName [ @c:\windows\syswow64\iedkcs32.dll,-3051 ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{7B849a69-220F-451EB3FE-2CB811AF94AE}
Name: UNKNOWN - DllName [ %systemroot%\system32\gpprnext.dll ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{8A28E2C5-8D06-49A4-
A08C-632DAA493E17}
Name: UNKNOWN - DisplayName [ @%systemroot%\system32\gpprnext.dll,-1 ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{8A28E2C5-8D06-49A4-
A08C-632DAA493E17}
Name: UNKNOWN - DisplayName [ @gptext.dll,-204 ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{cdeafc3d-948d-49ddab12-e578ba4af7aa}
Name: UNKNOWN - DllName [ c:\windows\syswow64\iedkcs32.dll ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{CF7639F3-ABA2-41DB-
97F2-81E2C5DBFC5D}Name: UNKNOWN - DisplayName [ @c:\windows\syswow64\iedkcs32.dll,-3051 ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{CF7639F3-ABA2-41DB-
97F2-81E2C5DBFC5D}
Name: UNKNOWN - DisplayName [ @gptext.dll,-205 ]
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions\{fbf687e6-f063-4d9f-
9f4f-fd9a26acdd5f}
Name: UNKNOWN - GoogleChromeAutoLaunch_73B90D4D0D4A45E4E1249D0D8EDB5EB0 [
"c:\program files (x86)\google\chrome\application\chrome.exe ]
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Name: UNKNOWN - CCleaner Monitoring [ "c:\program files\ccleaner\ccleaner64.exe ]
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Completed Registry scan
Total items scanned: 25075
Items found: 17
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Start Hosts file scan
Completed Hosts file scan
Total items scanned: 34
Items found: 0
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Start Cookies scan
Completed Cookies scan
Total items scanned: 441Items found: 0
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Start File system scan
Name: Spyware.NSKeyLogger
C:\WINDOWS\system32\GdiPlus.dll
Completed File system scan
Total items scanned: 6180
Items found: 1
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Scanning Finished. 12.03.2014 20:12:33