Problems with various administrator abilities

Ok. So i created my account on my laptop (win7) and it is the administrator. It worked fine for a long time, but a few weeks ago i opened it up, and it wouldnt let me do anythingt hat required administator permission. I couldnt open the task manager ("disabled by administrator") and i am the administrator!!? Anyway i looked it up. Went into regedit and added/deleted a few entries and viola it worked. And all seemed to work fine, permissions and all except when i tried to run administrator commands through the cmd. When i tried to scan my computer files or disk check it wouldn't let me. (Though it let me use disk check through the windows UI.) i know this is kinda an odd problem but any help would be greatly appreciated.

Thanks,
Brennan

Sounds like a weird issue. You could have malware trying to remove administrative privileges from all users. I would suggest running Malwarebytes to see if it finds anything more-so as a precaution.

Try these steps as well (after the scan):

1. Click Start.
2. Click Computer (you can also found this icon on the desktop).
3. Right click on the Hard Disk icon where your OS is installed on and click Properties.
4. Click the Security tab.
5. Click the Advanced tab.
6. Click the Change Permissions button located after the Permission Entries list.
7. A new window will appear on your screen. Such a window contains a list of all the user accounts available on your computer.
8. Select the user account you want to give total control over your Windows 7 and click the Edit button.
9. Now, tick the checkbox labeled “Total Control” and press OK.

http://www.webtlk.com/2010/04/29/how...-in-windows-7/

Ok thanks i will try that