Why can't I change my power options?

Hello,

I am the administrator on my computer, yet I can't access the main customization options, such as power options, user accounts, system, personalization, or performance information. I've tried disconnecting from any internet since it may be a system administrator's settings from the network that might have been the problem, but I still couldn't. I just want to have access to the things that I SHOULD have access to. I am the only one with an account on this computer.

As a side note: This computer came loaded with Vista and just recently I loaded Win7 onto it. I was the administrator on Vista, but I don't know if something got messed up in the process of switching to Win7? Maybe?

Help anyone?

Following the sequence in the bar from your screenshot, I can't access "user accounts" to check. I'd assume I'm actually not administrator, for some reason, anymore since I can't access the things that define how the accounts are run. I'll try safe mode and see what I can do there.

But, I can't answer your question since I can't access that area. It just gives me very quiet "boop" sound when I click those areas. I can barely hear it even with the volume at 100%.