My accounts have dissapeared, how can I find them?

@suem You'll have to provide more information than that for anyone here to try to offer help. For instance...
Does your Quicken file open okay?
Are all the accounts missing, or just some?
Are they all of a certain type, such as investment accounts or credit card accounts?
If you can capture a screen shot of a portion of your left sidebar, if it doesn't reveal any sensitive financial data, and drag it into your reply, it might help us understand what's going on.