First you need to get into safe mode with networking.   To make that happen shut down the computer.  Then turn on the power while tapping the F8 key about once a second.  You should get a black screen with white options. 

Use the up and down arrow keys to hight "Safe Mode with networking", hit Enter. Go through until you get to the Windows desktop

Click start button, Run, there should be a past file listed for iexplore.exe

Click on it

 or type in Run blank  "C:\Program Files\Internet Explorer\iexplore.exe" , without the "" and hit return

You should now have internet explorer web browser open.

Type in www.avilwinters.com, hit enter

For reference  Detail instuctions    

Each of links below will download a file with the file extension .mik.  Save them to the decktop and change the file extension to .exe.  Windows may warn you about changing the file extension, but just hit OK

 rkill.mik    This should stop the virus running on the customer so you can run the other programs below

tdsskiller.mik  This shoud stop the Google redirect

mbam.mik   Loading and running this scan see detail instructions for process.   This should remove the virus.  Scann will take over an hour

unhide.mik  this should unhide any files the virus hide

 

After running all of these in Safe Mode with Networking, restart the computer.  If the virus can be removed by programs, it should be gone now...if not it will take more manual intervention or I will have to buy a removal tool

 

let me know, what happens