Mine is Intel celeron,248mbRAM,windows XP,10yrs old

It is having 'RealtekAC97,Ver 5.36' installed.

As i have problem with that,i downloaded 'Realtek High Definition Audio Driver,ver 5.10.0.6602' from Net.

But the system has become very slow.

Hence,i tried removing both by 'Control panel-add/remove'

I am getting Error 'Setupexe has encountered a problem' & unable to Remove.

I tried in Safe mode also,but same result.
Pl suggest a way to Remove both.