Generally yes, the some updates can be uninstalled as long as there is an
uninstall option.
For others, System Restore may be necessary.

Do you know which update?
How sure are you that it is an update?

This link may help, at least if there is something you missed:
http://www3.telus.net/dandemar/slowcom.htm

Generally you need to install all Critical Updates:
http://www3.telus.net/dandemar/security.htm

--
Jupiter Jones [MVP]
http://www3.telus.net/dandemar
http://www.dts-l.org


"Tippy" <Tippy@discussions.microsoft.com> wrote in message
news:6F913D22-4937-4CC5-B965-340AACA430A5@microsoft.com...
>I NEVER used to update windows....and never had a problem. With this
> computer, decided to bite the bullet and update whenever one's available.
> Now
> the computer has slowed down............I have checked for spyware,
> viruses,
> etc., etc. Everything that everyone says to check for.
> Up until now, over 20 years using computer, have never had such a problem.
> Seems to have started when I updated.
> Is it possible to go into Remove programs and delete the updates one by
> one
> with no adverse effects????
> Thanks
> tippy........