HP Pavilion DV7-6c43cl: HP DV7: Guard Web Page Framework. Virus? Infected BIOS?

Posted in response to another as subject:

When I start my laptop, without clicking the shortcut of IE, IE (or firefox, tried both) opens a web page to the home page. The Web page then keeps reopening and then begins to open new windows, all with the home page. So I find myself with 20 to 40 new windows, the process does not stop.

Initially, I thought it was IE, but when I installed Firefox, the same problem. I disabled modules and scanned with virus recommended software, nothing helps. Had the same problem in safe mode. Scanned the HARD drive, no problems not discovered. Today, I did a reinstall of complete system of my HP recovery disks. Sure enough, as soon as I finished setting up the laptop and is computer went online for the first time, exactly the same problem. Guard re-opening the home page MSN and continues to open the homepage of many new widows.  I don't have much knowledge of computers, but I read somewhere that the bios may be infected? How will I know if this is the case? How to deal with this problem, are there any other options to get my phone working properly again?

I've had the laptop for almost 3 years and started having this problem about three months ago.

I wonder if one of your keys is stuck on the keyboard.

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