Hi i recently installed Windows 8.1 pro x 64, in my old PC. Just after installing i installed Bit Defender Total Security 2015 a few other essential softwares and started updating my system from the windows update section. The download speeds were good. And after that i opened the browsers and they are too slow, browsing speed are really bad but download speeds are ok. I pay for the Bsnl Rs.950 plus tax plan where till the first 8 GB i get 4 mbps download speeds and then unlimited at 512 kbps. I get an average of 25 kBps download speed( yes i exceeded the 8 gig) but browsing is really slow Google takes a 1-2 minutes to load and mostly get an error message and am asked to retry. Is it because of some error with my Windows 8.1 or why exactly is this problem happening. And since i use Bsnl i also don't know if this problem is because of them. I've attached a pic which shows the Occupancy, SNR Margin .. those stuff so hope somebody will let me know where the problem lies and help me solve it.