windows7 back vista premium

Depends how you changed it from Vista to W7 in the first place, and what Vista media you still have.
Hi terry
It was change by myself from windows7 disc i don't know if any vista is left on the harddrive and
how can i find this out
Post a Disk Management screenshot (the sticky will show you how), and see if there's a Windows.old folder on the C: disk.
Saying that you changed it yourself doesnt quite answer the question. Did you do an upgrade or a full fresh install?