Possible hardware virus on my Dell Laptop

Hello,



I did a dell factory restore on my Dell Inspirson 1525 and am now trying to download my mcafee and am getting an error message: "IE cannot download DMSetup.exe from download.mcafee.com. IE was not able to open this Internet site. The requested site is either unavailable or cannot be found. Please try again later. " I get a similar messageswhen I attempted to download other programs. I am thinking I need to replace the hard drive, but was hoping I can do something else less drastic. Initially the problem was IE wouldn't open and then I couldn't connect and then my network window wouldn't open. Hence the factory restore..Please help any advice is welcome.
Thank you.