HELP!!!!!!! SECURE WEBSITES WONT LOAD!!

[yaoers98]

help!! whenever i try to get on a website that needs a secure connection like youtube, gmail, facebook, etc all of my browsers say that theres an SSL error and the browsers say that they can't verify the certificate of the website. when i click continue the page loads extremely slow and the pictures dont show up and facebook looks like im viewing it from a crappy flip phone and there are no pictures just text on facebook. the pages load fine on the other 3 computers that are on the same network.
when im on gmail i can't chat on it it shows 'Error 501 (net::ERR_INSECURE_RESPONSE):'

PLEASE tell me how to fix this or tell me what to problem is exactly because i can't do anything on this computer now
thanks

 

[hang-the-9]

Go to I.E. options, reset the security settings to default, try again.

 

[yaoers98]

yeah tried like everything

 

[calmstateofmind]

I'm almost positive I know a fix, but really quick, what OS are you using?

Edit: And what browser are you using as well?