A few days ago my pc was automaticly updated from Microsoft but since then the computer have been encountering lots of errors on the internet and have to close and restart the web page.
I want to delete these update but they are not showing in the control panel, i want to know if there is a special folder that keep these download so i can delete them.?

As it's Windows you have to go through a regulated process to install/uninstall programs/updates.

I'd suggest you do a system restore to a date prior to the problems.

Are you talking about Service Pack 3?

If so it can be found in Add/Remove Programs

It is called Windows Service Pack 3 so it will be towards the bottom. You can just remove it and it will bring your computer back to the original state it was in before the update.

If that doesn't solve your problem let me know.

EDIT:

or you could go with what elpmek said and just do a system restore to before the update.

I will do a restore, thanks