Alrighty, now I've got a new problem with my network

What you have described is textbook hardware conflict. By this, I mean that either a driver is corrupt or wrong. . . or hardware is loose. Loose hardware will also sit for a while and when bumped cause a hardwae fault and BSOD or lockup your computer. I still suggest openning the puter and making sure everything inside is well seated and for the aircard, that includes the antenna wires.