I had this crappy issue but I never used it to get anything fixed , I just wait shitload of time and it finally gets sync or reindexed alone.
But I don't get it ... Is it Sync or reindexing with disk ? If it's Synchronizing with network then there is nothing you could do I guess because it's downloading the Blockchain right now .
and check here , you most likely need to run both commands : http://bitcoin.stackexchange.com/questions/22199/what-exactly-did-bitcoin-qt-rescan-reindex-do (check both question and answers )