Did u getting error accessing registry editor? Go to run or hit window key + R at same time & run command will appear. Then type " Gpedit.msc " without quotes & then go to " User Configuration " - " Administrative Templates " - " System " & then double click on " prevent access to registry editor tools " & then tick " disabled " or " not configured "& then click apply & ok.
Btw, u need to uninstall existing printer related softwares, drivers completely before fresh install. Either do it via control panel - " programs & features " or do it via 3rd party uninstaller like revo.