Hey guys. The computer with this issue is a Lenovo Y410P Ideapad. It came pre-loaded with Windows 8 64 bit and I updated it to 8.1 64 bit from the Windows Store a few weeks ago. Processor: Intel Core i7-4700MQ CPU; RAM: 8 GB.
So, here's the problem: Before the 8.1 update, I could do anything that I needed to; give User Account Control the okay to run any given program, run the Admin Command Prompt, whatever. UAC would prompt me with a simple "Yes" or "No" whenever I wanted to run a new program, which was pretty often as I had just gotten the computer.
But after the 8.1 update (well, I have reasonable suspicion that the update caused this), all of my administrator privileges were gone and there was no admin account to be found on my computer. I could still run any program that I had given UAC the okay to run before, but now any new or admin-only programs would present me with an unworkable UAC prompt (see Figures 2 & 3)
And, as far as I can tell, the Admin account isn't just hidden or anything. I am the only user (see Figure 1) and, when trying out internet-prescribed remedies, I only get errors (see Figure 4).
So, what can I do? Reinstall Windows? Something else that hasn't been suggested? Keep in mind that I'm not entirely sure that this is traceable back to installing 8.1, that's just what I remember. It may very well be malware, though the computer did come installed with McAfee.
Figure 2: When trying to change my account type, an admin ability, this dialog box appears. However, there is no prompt for a password, forcing me to click "No". Print Screen doesn't work when this dialog box is up, forcing me to take a physical picture of it.
Thanks for any help that you guys can give!