Can't remove Malware

[Northy]

Some Malware has got onto the mother in laws laptop and I can't seem to get rid of it, in add/remove programs it is listed as:

Inbox Toolbar
PC Power Speed
Rebateinformer

I tried uninstalling them from add/remove programs, but they are still on the pc, they still pop up.
They still show up in add/remove programs but when you click on them it says they can not be removed.

I've tried Malwarebytes but it finds nothing

Any ideas?