Bummer! I went through the same process after running the beta (except reverting back to Win7 for the upgrade), and things have been really good on my rig. I've seen quite a few articles on how to blow out the previous Windows remnants (clean Win10 install or other more arcane things), and I'm still considering doing that for a few reasons. My Win7 was a 32-bit installation and that's what Win10 automatically upgraded to, and damn it, I want to utilize all of my RAM! Again, sorry your system got bogged down :(
Update: I did the clean install procedure after the initial Win10 update as outlined at The Verge, and all was groovy. 32-bit to 64-bit without issue and all of the remnants from the Win7 install are no longer an issue. I had a little trepidation about the activation after wiping everything, but whatever madness MS does around hardware imprinting and licensing seems to have worked flawlessly.
Bummer! I went through the same process after running the beta (except reverting back to Win7 for the upgrade), and things have been really good on my rig. I've seen quite a few articles on how to blow out the previous Windows remnants (clean Win10 install or other more arcane things), and I'm still considering doing that for a few reasons. My Win7 was a 32-bit installation and that's what Win10 automatically upgraded to, and damn it, I want to utilize all of my RAM! Again, sorry your system got bogged down :(
Update: I did the clean install procedure after the initial Win10 update as outlined at The Verge, and all was groovy. 32-bit to 64-bit without issue and all of the remnants from the Win7 install are no longer an issue. I had a little trepidation about the activation after wiping everything, but whatever madness MS does around hardware imprinting and licensing seems to have worked flawlessly.