I'm using a OEM copy of Win7 Ultimate that came with another laptop.
When I install SP1 through Windows Update it fails in the 70-75% range and gives me the 80073712 error
When I install using the downloaded SP1 it takes an extremely long time, to the point I thought it had locked up, before telling me it can't install.
I've tried normal mode, safe mode, I've tried normal mode with selective boot, I've tried safe mode with selective boot. I've covered every single suggestion on every single thread I can find on Google, and the only one I haven't been able to try is the inplace upgrade, which is why I created this thread.
On the link you gave me, the .iso for my version is a dead link.