Unable to install anything due to possible admin perms problem

For some reason for the past few weeks I've been unable to install any software. The usual administrator window comes up asking me if I want to allow the applications to make changes to my computer. It then says, "To continue, enter an admin user name and password." Then it just has a "No" button at the bottom. There isn't a place to type in a username and password. If anyone has any idea as to why I would most appreciate a hand.

Actually, I just noticed that I don't have an admin account. It appears that my one & only account is listed as a guest user for some reason.

mazate said:

...it just has a "No" button at the bottom..

AddRAM said:

Wow, I`ve never seen that, are you using an Admin account ?

I have, on all too many threads. If UAC only offers a 'No' button it means that there are no admin accounts on this PC. The usual reason for this is that the users have demoted their account a standard user thinking this would be 'safer' for browsing the web. Windows lets you remove admin rights from the only admin account without warning you this is not a good thing to do.

mazate said:

Actually, I just noticed that I don't have an admin account. It appears that my one & only account is listed as a guest user for some reason.

You can enable the built in administrator account, Option Five would be the only one available to you.
Enable or Disable Elevated Administrator account in Windows 10

I never did that so my eight year old son is the likely culprit. In any case, I do have a usb recovery drive for windows 10... I'm looking online for steps to get this resolved. Apparently I'm not the only one this has happened to. :)

mazate said:

, I do have a usb recovery drive for windows 10... I'm looking online for steps to get this resolved. Apparently I'm not the only one this has happened to. :)

If you have a recovery drive you can use it for Option five in the tutorial Enable or Disable Elevated Administrator account in Windows 10 then sign in as Administrator and make your account an admin again.

(no need to look any further than TenForums :))

Well.... I did it but I regret it now. I followed the steps and it did indeed setup the system admin account... but it also wiped my old user account so when it booted up it did so with just the system admin account and put my computer as though windows was just installed... all old software is there (as though it was just installed without configuration) but my pictures, videos, documents... all gone.

Ok, all may not be lost. When I go to add a new user, it opens "local users and groups manager" and I see my name there. I'm not sure how to add it though since simply double clicking the user doesn't appear to add it... I'm kind of stuck here.