OK, I'm not a crypto noob but I'm new to monero. This jinky wallet is pissing me off (slow, crashes, freezes) and bittrex won't even let me send funds over. Where do I find info on a full, clean uninstall to start over?
https://downloads.getmonero.org/cli/linux64 Has always been smooth as silk for me. Building and scanning the database though can be unusually computationally intensive compared to other crypto-currencies. Is your system a bit on the older side?
As far as a fresh install. On linux it stores application data in ~/.bitmonero. On windows I would venture a guess that its in C:\Users\userName\AppData\Roaming or C:\Users\userName\AppData\Local. Probably Roaming but I have never used the windows client myself so I can't be sure. Other than that just delete the directory where you unpacked the binaries or use the add remove programs utility in windows.