You're welcome.
You should be able to install AVG from your usb after this first round, but bear in mind that this system is heavily infected. This will require more than one round to properly eradicate, so please stay with me until given the 'all clear' even if symptoms seemingly abate.
Read through this entire procedure and if you have any questions, please ask them before you begin. Then either print out, or copy this page to Notepad and save to your desktop for reference as you will not have any browsers open while you are carrying out portions of these instructions.
It's IMPORTANT to carry out the instructions in the sequence listed below.
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Download the tools needed to a flash drive or other removable media, and transfer them to the infected computer.
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Download
ComboFix.exe from
here
**Note: It is important that it is saved directly to your desktop**
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With malware infections being as they are today, it's strongly recommended to have this pre-installed on your machine before doing any malware removal.
The Windows Recovery Console will allow you to boot up into a special recovery (repair) mode. This allows us to more easily help you should your computer have a problem after an attempted removal of malware. It is a simple procedure that will only take a few moments of your time.
Go to Microsoft's website =>
http://support.microsoft.com/kb/310994
Select the download that's appropriate for your Operating System
Download the file & save it as it's originally named, next to ComboFix.exe.
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- Drag the setup package onto ComboFix.exe and drop it.
- Follow the prompts to start ComboFix and when prompted, agree to the End-User License Agreement to install the Microsoft Recovery Console.

- At the next prompt, click 'Yes' to run the full ComboFix scan.
- When the tool is finished, it will produce a report for you.
Please post the
C:\ComboFix.txt along with a
new HijackThis log for further review.