ok, here we go! Click on the Start Menu and start typing Powershell, it’ll bring it up to click on.
In that command line first type (I’d copy and paste it 
):
cd "c:\Program Files\zcash4win\app\"
Then run the command:
.\zcashd.exe -daemon=0 -showmetrics=1
That’ll sync the blockchain in the command prompt. On that screen it’ll have a metric displayed for “Block height”, when that matches the current block height on https://zcha.in you are caught up and can launch the zcash4win GUI. And once it’s sync’d it is happiest if it is running all the time (all full node wallets all regardless of coin!) [EDITED FOR TYPO ABOVE]