First though, My Computer Specs:
-Gateway 510 Series
-Pen 4 2.80Ghz
-NVIDIA GeForce FX 5200
-Adware/Spyware/Virus Protection used regularly are Ad-aware, Spyware Doctor, AVG, NOD32 and COMDO Firewall Pro
-Cable Modem: Scientific Atlanta Webstar DPC2100 Series
I am able to browse websites for the first couple of minutes I turn on my computer and the browser. Then after a x amount of time I get the "Problem loading page" error. the times varies, but usually within 10 minutes of when i turn on my computer, which is why I believe it is a DNS timing out issue.
the only way to browse the net again is to restart, but the cycle repeats and after a x amount of time it times out again. sometimes i dont have to restart my computer but close firefox and wait a coupleseconds then open it up again. but then the timing out cycle continues.
I'm sure its not Firefox as i've tried reinstalling it and this happens in IE as well.
Furthermore some programs and some games can connect to the internet like battlefield 1942, World in Conflict and instant messagers. While others can't like, Steam (Half-Life 2) and Battlefield 2. I'm guessing the programs that i cant get online with uses the DNS servers.
I've had this problem before but never fixed it and just lived with it. then my old hard drive crashed back in July and i got this new one with a clean install of windows and i didnt have this problem, til a couple weeks ago.
I'm pretty sure it aint my cable modem or net connection per se, just the DNS servers. I've disabled my firewall and it still happens. I've scanned for viruses and i dont have any. I tried my ISP tech support but they were no help. I've tried different DNS servers, using OpenDNS, but that didnt work either.
I dont know what else to do to try and fix this, any help would be appreciated. thanks in advance.