Can you please do the following.
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Scan with HijackThis and then place a check next to all the following, if present:
O2 - BHO: (no name) - {0AA0B610-0971-F3D1-56C8-0BB739F56621} - C:\WINDOWS\system32\atcxO89S.dll
O2 - BHO: (no name) - {1F6581D5-AA53-4b73-A6F9-41420C6B61F1} - C:\WINDOWS\system32\tmp25.tmp.dll
O2 - BHO: (no name) - {36d7502e-5f19-471b-b727-48b656993b70} - C:\WINDOWS\system32\app026.dll (file missing)
O2 - BHO: (no name) - {5ADF3862-9E2E-4ad3-86F7-4510E6550CD0} - C:\WINDOWS\system32\rwbkujog.dll (file missing)
O2 - BHO: (no name) - {696568FA-D46C-DB96-4967-FE8DB82085BC} - C:\WINDOWS\system32\erv.dll (file missing)
O2 - BHO: (no name) - {73C5FEA7-2AC5-48A7-9A4E-916B437598CE} - C:\Program Files\Common Files\hope83122.dll (file missing)
O2 - BHO: (no name) - {7CBA95F2-BFBC-47D0-A041-C547833D2A3B} - C:\WINDOWS\system32\awvtu.dll (file missing)
O2 - BHO: (no name) - {F4002052-AB29-4B33-8C8D-0E99084564EC} - C:\WINDOWS\system32\mljgfcb.dll (file missing)
O4 - HKUS\S-1-5-18\..\Run: [userinit] C:\WINDOWS\system32\ntos.exe (User 'SYSTEM')
O15 - Trusted Zone: *.amaena.com
O15 - Trusted Zone: *.drivecleaner.com
O15 - Trusted Zone: *.errorprotector.com
O15 - Trusted Zone: *.errorsafe.com
O15 - Trusted Zone: *.imageservr.com
O15 - Trusted Zone: *.imagesrvr.com
O15 - Trusted Zone: *.systemdoctor.com
O15 - Trusted Zone: *.winantispyware.com
O15 - Trusted Zone: *.winantivirus.com
O15 - Trusted Zone: *.winfixer.com
O15 - Trusted Zone: *.amaena.com (HKLM)
O15 - Trusted Zone: *.drivecleaner.com (HKLM)
O15 - Trusted Zone: *.errorprotector.com (HKLM)
O15 - Trusted Zone: *.errorsafe.com (HKLM)
O15 - Trusted Zone: *.imageservr.com (HKLM)
O15 - Trusted Zone: *.imagesrvr.com (HKLM)
O15 - Trusted Zone: *.systemdoctor.com (HKLM)
O15 - Trusted Zone: *.winantispyware.com (HKLM)
O15 - Trusted Zone: *.winantivirus.com (HKLM)
O15 - Trusted Zone: *.winfixer.com (HKLM)
O20 - Winlogon Notify: app026 - app026.dll (file missing)
O20 - Winlogon Notify: awvtu - C:\WINDOWS\system32\awvtu.dll (file missing)
O20 - Winlogon Notify: mljgfcb - mljgfcb.dll (file missing)
O21 - SSODL: DCOM Server 25319 - {2C1CD3D7-86AC-4068-93BC-A02304B25319} - (no file)
Now, close all instances of Internet Explorer and any other windows you have open except HiJackThis, click "Fix checked".
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Locate and delete the following item(s), if present. Make sure you are able to view system and hidden files/ folders:
files...
C:\WINDOWS\system32\atcxO89S.dll
C:\WINDOWS\system32\tmp25.tmp.dll
C:\WINDOWS\system32\ntos.exe
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Note that some of these file(s)/folder(s) may or may not be present. If present, and cannot be deleted because they're 'in use', try deleting them in Safe Mode by doing the following: Restart your computer
After hearing your computer beep once during startup, but before the Windows icon appears, press F8.
Instead of Windows loading as normal, a menu should appear.
Select the first option to run Windows in Safe Mode hit enter.
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Reboot.
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Please download VundoFix.exe
to your desktop. Double-click VundoFix.exe to run it.
Click the Scan for Vundo button.
Once it's done scanning, click the Remove Vundo button.
You will receive a prompt asking if you want to remove the files, click YES
Once you click yes, your desktop will go blank as it starts removing Vundo.
When completed, it will prompt that it will reboot your computer, click OK.
Please post the contents of C:\vundofix.txt and a new HijackThis log.
Note: It is possible that VundoFix encountered a file it could not remove.
In this case, VundoFix will run on reboot, simply follow the above
instructions starting from "Click the Scan for Vundo button." when
VundoFix appears at reboot.
