Command to check the status of IPV6:

1. Open cmd prompt in Administrator mode.
2. Type the following command.
     reg query HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters /v DisabledComponents
3. The following represents the different status regarding IPV6.
    i) 0 to enable all IPv6 components. (Windows default setting)
    ii) 0xffffffff to disable all IPv6 components except the IPv6 loopback interface. This value also      configures Windows to prefer using IPv4 over IPv6 by changing entries in the prefix policy table. For more information, see Source and Destination Address Selection.
    iii) 0x20 to prefer IPv4 over IPv6 by changing entries in the prefix policy table.
    iv) 0x10 to disable IPv6 on all nontunnel interfaces (both LAN and Point-to-Point Protocol [PPP] interfaces).
    v) 0x01 to disable IPv6 on all tunnel interfaces. These include Intra-Site Automatic Tunnel Addressing Protocol (ISATAP), 6to4, and Teredo.
    vi)0x11 to disable all IPv6 interfaces except for the IPv6 loopback interface.

Volume Control & Volume Mixer Popup through Command Pompt

Command to open Volume Control & Volume Mixer Popup box:

1. Open Command prompt.
2. Give the command "sndvol -f".
3. The Volume Control popup will be opened...

Command to open Ease Of Access Center

Command to open Ease of Access Center (Win+u):

1. Open cmd from start menu or run.
2. Type "utilman" and press enter.
3. Close cmd.

Open a Command Prompt from a Command Prompt:

Command to open a command prompt from another command prompt :

start cmd.exe