I recently removed CA Internet Security from my daughter's father-in-law's eMachine using Revo Uninstaller (the ONLY way to remove a program). There were over 4000 registry entries and 700 files. That program
really embeds itself in your computer. Removing it manually would be an arduous and dangerous task. CA makes even Symantec look tame. The degree to which CA hogged resources stretches imagination. He had 512GB of RAM installed, so I installed another 512Gb. It made no difference what ever in the way the computer performed (which was very snail like).
I know none of this is of any help with your problem, so my recommendation is to do a repair install of your OS. Click
here to learn how. A repair install will renew all your system files while leaving your programs and files intact. Having said that, it is
always a good idea to backup your files before doing anything like this. You will have to download/install all windows updates (again) after this process.
BTW... If you want to use Revo Uninstaller to uninstall CA, you would need to reinstall CA first. Then Revo will get it all out.
EDIT... Sorry, forgot you can't access your files. Good luck with the repair install should you elect to use it. It's reasonably safe, but there are never any guarantees.
Raybro