You have a bigger problem than what it seems... what I mean is, the problem isn't the website itself, it's your computer. From the sounds of it, you have some small malware in there somewhere that may be screwing around with your browser and/or antivirus software itself. Just a couple things you can try, in order to verify:
1. Use a different browser. Firefox, Chrome, Opera, etc... stay away from Internet Explorer, though.
2. Boot into Safe Mode and see if you still get the same issue.
I just opened nine tabs of
www.bcfiles.com and had no issues, so it really sounds like malware has infected your system, and is not the fault of bcfiles.com itself.
Edit: If you choose Firefox or Chrome, look into installing Adblock into your browser! It *may* at least help to solve the issue.