Since I installed Win7 on my DELL Inspiron 1520 notebook, I frequently experience BSODs.

I noticed that those nearly only happen on two occasions

• disconnecting a Bluetooth DUN connection
• selecting a file for upload in a browser (i.e. clicking on the button, shortly after the file dialog opened)

The BSOD doesn't appear always on these actions.

BluescreenView told me that most of the time it is

• srv2.sys+45883 or
• srv2.sys+42982 or
• ntoskrnl.exe+71f00

Now I read that srv2.sys is for NETBIOS sharing, which could be triggered when opening the file open dialog. All unused NICs are deactivated.

Any ideas how to fix this?