Why won't my card reader process credit cards?

[Pittypatporch]

[The title of this post was changed from :"I enter the amount of the transaction but when I slide the card it will not do anything. Why?" to :"Why won't my card reader process credit cards?"]

When I enter the amount for the transaction and slide the card through, nothing happens, why?

[nika]

Hi there @Pittypatporch. Sorry that you're having trouble with your reader. It sounds like you're using the magstripe reader, yes?

If so, take a look at Sean's Best Answer for troubleshooting tips. 

I hope this gets you back up and running, but let me know if not!