Error 0x80004005 failed to remove spyware and adware

I just downloaded Beta 2 yesterday. When I do a quick scan, nothing is
found. When I do a full scan it finds 17 things, but when I select to remove
all each of them come back as failed. they are all in pest patrol
quarantine, but pest patrol could not remove them either.

Each time I log onto the internet I am having problems with all kinds of
pop-ups, so I know I have something weird on the computer, but I can't seem
to remove whatever it is that is causing it. Any ideas on why I get the
error, or what other program I should try?