a couple of quick questions... a little on the tech side but all wallet related

cryptonite-qt    wallet was working fine until a couple of days ago. i was abusing my gpus a little looking for a stable overclock (good where i got it now at least)   had the wallet offline while i did all this.  happy with where i was at rebooted, started the wallet up to re-sync, set my OC to active and started mining, after a few hours i went to bed. sometime during the night (about7hours w/o a problem) my computer froze. upon rebooting the wallet wont sync up. it is 4 days behind at this point. and from what i can gather, there is nothing for it connect to.
in the debug console i get the following over and over again with consensual date/time stamps and a line that looks like a hash inbetween

2017-12-27 02:51:25 ERROR: ReadBlockFromDisk : OpenBlockFile failed
2017-12-27 02:51:25 ReadBlockFromDisk: Could not find block

I would assume if i could find and delete the block file it would go and re-download it again to sync up again. but that brings me back to 0 connections to others.   any thoughts?


I have now made a paper wallet, mostly to use until i figure out the above problem, have mined for about an hour sending to it. however i have stopped only because i can not find site that i can check its balance. i am confident that i have set it up correctly, using the public key to try to check its balance/tranactions... once i can find some where to do so. so for this one my question is....  anyone know of a site i can check my paper wallet's balance? TIA