Have HijackThis Fix these entries:
O4 - HKLM\..\Run: [winshost.exe] C:\WINDOWS\system32\winshost.exe
O4 - HKLM\..\Run: [firewall_anti] C:\WINDOWS\firewall_anti.exe
O4 - HKCU\..\Run: [winshost.exe] C:\WINDOWS\system32\winshost.exe
Then delete these files:
C:\WINDOWS\firewall_anti.exe
C:\WINDOWS\system32\winshost.exe
Reboot & tell me if this restores your internet connection.
O4 - HKLM\..\Run: [winshost.exe] C:\WINDOWS\system32\winshost.exe
O4 - HKLM\..\Run: [firewall_anti] C:\WINDOWS\firewall_anti.exe
O4 - HKCU\..\Run: [winshost.exe] C:\WINDOWS\system32\winshost.exe
Then delete these files:
C:\WINDOWS\firewall_anti.exe
C:\WINDOWS\system32\winshost.exe
- Go to Start> Run - type cleanmgr (this starts Windows DiskCleanup)
- Select Drive C: & click the 'OK' button
- Select the following options:
- Temporary Internet Files
[*] Recycle Bin
[*] Temporary Files
- Temporary Internet Files
- Click the 'OK' button
Reboot & tell me if this restores your internet connection.