I have no clue what this .\bash folder could mean. What I would do is simply restore from seed and check out where the dat file is placed then. It should be in your APPDATA folder in a map called Electrum.
The folder has bash.exe in it. Could be my attempt to install cygwin (gnuwin32) a long time back on this computer.
I deleted the .electrum folder under .\bash and after that, Electrum ran and when I created a new wallet, the .electrum folder got created again under the .\bash folder. When I put back the original wallet, Electrum refuses to run again. So, it could be a case of the original electrum.dat getting corrupted. But I am wary of the whole thing now. I will appreciate any pointers on how to go forward.