This is why I do and dont recommend the btc qt wallet.

It takes forever if you dont keep tabs on downloading the blockchain which is what your computer is catching up on.. so I recommend leave the computer on however long it takes to access your btc and download the other btc wallet choices that doesnt need to download the whole chain each time you want to access bitcoin.

You got 2 choices which are multibithd and electrum? and then theres mobile apps as well.