UPDATE (somewhat later, the same day):
1.) in the meantime, I've found out there is also an excellent Wiki article dedicated to setting up Windows 7 on the
HP TC1100 HERE. It should be the most important guide you follow when updating.
So far, I've tested the following (and found them all working):
a. video driver. By getting the 82.12 installer and, after executing it, it decompressed itself to a directory. I've copied the two hacked files, as is explained, into the directory where the 82.12 installer decompressed itself. After the installation, resuming from sleep started to work. Excellent!
b. the "Mail" button hack. After the recommended Registry hack, it indeed started working; both short- and long presses are registered.
c. the screen rotation hack via the
Hardware and Sounds / Tablet PC Settings / Go to Orientation link (it's a link, not a button BTW). After the hack, screen rotation started to work when assigned to a hardware button. (I still need to find out how to make the three "soft" buttons work on the front.)
2.) I keep you posted when I learn something / test stuff. Currently, I'm installing Windows 7 on my
IBM Thinkpad a31p to see whether the D3D problems are gone on it too and running the CPU voltage decrease tests on the TC1100 to reduce heat / ventilation.