Happy Holidays n Welcome to our forum.
Posting is not very clear, but it sounds like a permission issue.
It would help a lot to post the exact warning or error. This will let us help u more.
Did u validate Windows? Is the Win CD a genuine Windows CD?
Lets try to start u in Safe Mode to see if we can get u into a new Admin account.
1- reboot PC as soon as it starts, start pressing F8 Key.
This will not load Windows and give u some option. Choose Safe Mode with Network. Windows will start to load just follow the directions. Once Window starts it will load only enough to get started. There's not much u r going to damage at this stage. All we want to do is here is create 2 new accounts. One new Administrator account and one Regular account (with Administrator privileges). U can name the new accounts anything u want. Just remember which one is the new Admin account and the regular account. To create the new account:
Go to >Start>Control Panel>User Accounts> Select new accounts. Name each account, u will want to create a Computer Admin and a Limited user account.
When done just reboot and Windows will load with the 2 new accounts u just created.
2- Log on with the new Admin account and see if u get the same message.
If u do, post the exact message on the next thread.
3- the regular account should also be tested. Once again see if u get the same message. If different post the message.
Write back let us know.