[pchelpers] Password

We recently installed a new Hard drive replacing the existing C drive.
Our minor problem is that it now asks for a Password after loading Windows
but prior to the desktop loading. The same box requesting a password appears
prior to connecting to our ISP when connecting to the Web.
Has anybody know how both of these can be deleted?
Note I am the only one with access to this PC so the password is NOT
required.
Thanks in advance
Ray K

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