Increase The Internet Speed Manually Without Using Any Software

First You Need To GO TO Start 
    Then You Click The Run
    Type In Regedit In The Box
    Next Go To The Folder
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
    \VxD\MSTCP
    Now, Find The String Default Rcv Window 
    Now,Edit The Number To 64240 (Was 65535)
    Restart Your Computer And Then Your Internet Speed Is Increases.