Please follow these directions to check for malware and post your logs in this thread:

Check the information on the first post of this thread under Virus/Worms for you to check your machine for malware: http://forum.avast.com/index.php?topic=53253.0.

Follow the directions of obtaining an MBAM (Malwarebytes) log (make sure you update MBAM first) and the OTL logs (save them as ANSI and not Unicode). When the OTL scan completes, it will open two notepad windows. OTL.Txt and Extras.Txt. Post the MBAM log here and the two (2) OTL log as an attachment (Additional Options > Attach > Browse (the logs will be on your desktop > Post).

I am going to refer you to our Certified Malware expert, named Essexboy. He will also review your logs and give you further instructions, however he comes on the forum late UK time. He will respond to you in this thread, so remember to check this thread daily.

Please do not make any changes to your machine after posting your logs.

Let us know if you have any questions. Thank you.