Windows 7 - Various computer problems [URGENT]

For a long time now I have been facing numerous problems with my computer. I have tried many supposed solutions but none have worked. My problems consist of: Unresponsive buttons to access administrative tools, the error that my computer does not detect me as the admin even though I set myself as the admin when I got it new I am also the only person who uses the computer. I have small disk symbols in-front of my desktop icons which are more of a nuisance than a problem, Most all of the windows updates I try to install fail. And when trying to install items like silverlight or updates, I get an error that reads "the feature you are trying to use is on a network resource that is unavailable"

Then It then prompts me to locate the source which I can never find. I also get these error codes after my updates fail 66A, 800064C, and 64C. I am not very educated in computer software so ANY help you guys can give me would be GREATLY appreciated.
If you need any more info or pics on my problems please let me know. Thank you!

Lets start with system file check

Run a system file check to verify and repair your system files.
To do this type cmd in search, then right click to run as administrator, then
SFC /SCANNOW

Read here for more information SFC /SCANNOW Command - System File Checker

Let us know the results from the report at the end.

Looking at your desktop you seem to only have Malwarebytes, and Advanced System Care, yet no Anti-Virus, which I would recommend to get one once this is resolved since there are many good free ones out there.

Back onto your original issue, I'm looking into your error codes. I found this:

66A: Seems to have something to do with .Net Framework 4 client profile, and it seems uninstalling that resolves the issue.
800064C: Nothing about it, but it seems to show up only on the Silverlight update.
64C: Seems to show up when updating Silverlight via Windows Update, the Update won't work due to your current installation of Silverlight being "broken".

Looking at the error codes I think you should try downloading Microsoft Silverlight, uninstall it from your PC, then reinstall it from the downloaded installer and see if anything changes after a restart. I know it may be stupid to think Silverlight would cause all of this, but it's worth a shot.

I would suggest getting the program rkill.exe ....I cant remember the site where I got mine for my vista, but if you google rkill.exe and use it in safemode with networking and then while using malwarebytes in Safemode to detect and remove trojans.... and then use Microsoft Security Essentials.... I usualy have those on my desktop just in case....

We are awaiting the results of running sfc /scannow so that we accurately advise you how to proceed.

Ok, for starters I don't think the verification worked. It say the verification phase is 100% complete but it also says "Windows Resource Protection could not perform the requested operation" I do have an anti virus software "Comodo" but I am on a different account that I was told to make on one of my fix searches. I have also tired to scan my computer in safe mode it came up with nothing. thank you for the quick replies btw

Please read the tutorial on running SFC.

Attach the sfcdetails.txt file to your next post.

SFC /SCANNOW Command - System File Checker

Alright here it is sorry for the delay.

I have read threw the tutorial and I don't think it can help much.

SFC managed to repair your corrupt files.