is not an easy one ..
maybe your system not uninstall complete, if you than again start the uninstall, it says.. the app is corrupt..
yes! you lost the folder inetpub\temp\apppools and yes your app and iis server role is also broken.. found with sysinternals’s processmonitor.. wy the hell..
and now ~21h the rc is running atom driven;)
and yes the PageViewerReloaded webpart is able to import, but there comes an error if i will add the part to the Home page: “No available sandboxed code execution server could be found.”.. but i must now a little bit do sleep..