if you not have safe the wallet.dat file, or the private key then you btc are gone
The OP said he DID have a wallet.dat file.
- I also found info in a text file for login to mtgox.com, libertyreserve.com, and goldexpay.com. None of those logins work now.
Well Mt. Gox is long gone. But these logins wouldn't be related to the wallet.dat file you have.
You should try to figure out why the issue with the wallet.dat file. There reason the set up full took so long to sync is because it was copying the blockchain, which would have been years of transactions to sync with.