Go to Start

----> Run. Type "gpedit.msc", then enter.

--->Navigate 2 local computer policy

--->then computer configuration

--->then administrative templates

--->then network

--->then just click on QoS Packet scheduling

--->then on the right hand side there is a " limit reservable bandwidth "

--->just double click on it and den select " enabled "

--->n set bandwidth limit to 0

That's it done!!Now close registry and restart ur PCn' C da changes.