Hello, STOP 0x000000C2: BAD_POOL_CALLER Usual causes:
Device driver, Memory
This time tdx.sys is referenced. This often points at your network card (or occasionally antivirus) The thing you really need to do is update the drivers for your network cards. Go to your computer manufacturers website, or the manufacturer of your network card and download some new drivers. If you don't know what network cards you have, look at the Network section of this tool: VistaForums SysInfo Tool
If you need any help, just ask. If you tell us the make and model of your network card, we will find drivers for you if you want.