Wa's right, RMA it. Also, that's a little strange that a surge protector would fix that issue.
Normally a PSU would be able to regulate that power to your GPU, even if you have a kooky surge protector, however if the surge protector wasn't providing enough juice (for whatever reason) then your card would have been underpowered because the PSU wasn't getting enough juice to begin with.
It is likely that you have caused perment damage to the card. You can never be sure that it is not going to show problems the next time you use the card. RMA the card and start off with a new one so you can have confidence in your card/system.