login problems

Try closing TurboTax, clearing your Cache and Cookies if you are using TurboTax Online, and reopen TurboTax.  You can also try a different browser.

If you need help accessing your account, see this FAQ:  Access your TurboTax Account

thanks a as I wrote I am using my pc  any other  suggestions

See if this helps: How do I install and activate my TurboTax Desktop product?

thank you no it did not help evrytime i login i put in my username and password and then it takes me back to  the login screen

Please call TurboTax Customer service.  Here is a link:  Turbo Tax Customer Service