The three of your recent crashes are caused by either NETIO.sys, or tcpip.sys. Both are network related.
The network driver you actually use is Realtek RTL8168D/8111D Family PCI-E Gigabit Ethernet NIC. And, the driver is somehow old.
0: kd> lmvm rt64win7
start end module name
fffff880`04a17000 fffff880`04a8c000 Rt64win7 (deferred)
Image path: Rt64win7.sys
Image name: Rt64win7.sys
Timestamp: Thu Apr 21 23:45:33 2011 (4DB07445)
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
So you should update the network driver, available at Realtek
To update the drivers, follow the steps:
First, download the network card driver from manufactuer's website.
Then reinstall the driver:
- Click the Start Button, type "devmgmt.msc" (without quotation marks) in the Start Menu Search box and press Enter.
- Double click to expand "Network adaptors".
- Right click your network card and click Uninstall.
- Check "Delete driver software for this device" check box, click OK.
- Restart the computer
- If windows does not auto configure the appropriate drivers at startup, install the downloaded one manually.
Let us know the results.