Updating Computer Drivers To Acpi Uniprocessor

i want to change my drivers back to acpi uniprocessor, but i can't seem to locate it.

what i did was: device manager > computer > acpi > driver > update driver > install from a list > don't search > but only acpi and standard pc are listed.

any ideas? thanks.

edit: nevermind, got it working. did a driver rollback. :)

#141770