The last time I used electrum I used all the coins on the addresses in the wallet so it's no issue there, I just would like to reset if I can, but everytime I load I get to the install wizard window asking for a wallet and a password, which I don't recall because I only used briefly, I can't see an obvious way to get past this/ reset/ open a new wallet. Help please! 
That is the password prompt window which is mislabeled. You actually have to trigger the real new wallet creation wizard to create a new wallet. There are two ways you can do that:
1) Run electrum with the -w switch giving it a path to your new wallet file (which it'll help you create):
Code:
electrum -w /path/to/walletfile
2) Another way is to rename the electrum data directory which is one level up from where the wallet file is located:
http://docs.electrum.org/en/latest/faq.html#where-is-my-wallet-file-located
Electrum will notice that you have no wallet file in your data directory and trigger the new wallet creation wizard.
Great, thanks very much.
