C:\Users\Username\AppData\Roaming\BurstWallet (folder is hidden)
You have to copy your passphrase(s) and the blockchain (burst_db folder) from /program files (x86)/BURST Wallet/
to C:\Users\Username\AppData\Roaming\BurstWallet if you want to keep them.
Ok and now i leave a trace on all computer i use my USB key on it? sorry its there i stop because NEVER i will use burstcoin on a computer where i have to delete like everything when im done using the wallet.