Excellent all round is ccleaner click here
coupled with Winaso click here are very reliable.
Ccleaner is totally free but Winaso has a trial version but in my opinion is worth the payment though you do not have to pay as this will scan and repair ten errors at any one time,allowing you to rescan and repair over and over.
The paid version is one click repair.
Also bear in mind,Winaso has other features too.