Problema upgrade'inant vista i win7

Sveiki, bandau upgreidint vista home premium i win 7 home premium ir meta errora: Windows Vista™ Home Premium cannot be upgraded to Windows 7 Home Premium. You can choose to install a new copy of Windows 7 Home Premium instead, but this is different from an upgrade, and does not keep your files, settings, and programs. You’ll need to reinstall any programs using the original installation discs or files. To save your files before installing Windows, back them up to an external location such as a CD, DVD, or external hard drive. To install a new copy of Windows 7 Home Premium, click the Back button in the upper left-hand corner, and select “Custom (advanced)”.

Seip tai turi leist upgreidint home premium i home premium, tai nesuprantu kame reples ;/ gal kas gali padeti?

neupgradink, o instaliuok naujai ir viskas <img src='http://uzdarbis.lt/public/style_emoticons/default/smile.gif' class='bbc_emoticon' alt=':)' />