Win 7 on a laptop is a pain in the ass, which is something I had to deal with for 6 months at my previous job.
1) Multiple external displays just don't work well *at all*. At least once a day I would get to the conference room and discover that Windows had left my primary monitor back on the desk, with no way to recover it apart from hiking back and fiddling with the mirroring controls.
2) Switching between wired and wireless networks, ditto. Every time I left the wired connection, if I had a document open on the share I'd get into a fun-filled round of "that document is read only, save it under a different name".
When I left the Windows world again (hopefully for the last time) this January my productivity shot up more than it should have.