The intermediate driver are found just below the transport protocols and above the miniport drivers in the network protocol stack. There are two types of intermediate drivers that are used: the LAN Emulation Intermediate driver and the Filter driver
This is causing your BSOD "ndiswan.sys"
Update your LAN driver!! Just get a second opinion aswell
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Click Start, and then type cmd in the Start Search box.
Right-click cmd in the Programs list, and then click Run as administrator. If you are prompted for an administrator password or confirmation, type your password or click Continue
At the command prompt, the following commands (press ENTER after each):
When in Device Manager, click View then Show hidden devices
Double-click the category containing your device driver, and then double-click the name of the device you want to Uninstall. (Here you will need to find your driver) If you cannot find it simply Exit Device Manager.
Click the Driver tab, and then click Uninstall.
If there is a Delete the driver software for this device box, check it. Read and Confirm Notification, click OK.
Exit Device Manager, and restart your computer.