If the printer will not finish the alignment page, I have seen this happen when one of the ink cartridges are low. Can you print a printer status report to look at the ink levels or can you print anything at this point? It may be that you are actually having a problem with your ink cartridges.
I know this document does not cover your exact problem but I do not know if your printer will not stop trying to print the alignment page or if you are just unable to finish the alignment process. In the meantime, this document may help you while I await your clarification.
The troubleshooting steps I want you to take are similar to what is mentioned in this document. I really hope it helps!