[JeffH]

vista will not accept my login after vista service pack update and install.

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Have you tried in safe mode?

I'm afraid I haven't found much information for this issue. I'd suggest you call Microsoft. They offer free phone support for Widows Vista Service Pack 1.

The toll-free call-in number in the U.S. for Vista SP1 help is (866)-234-6020.

Listen carefully to the options on the line as you wait and navigate for support. When you speak with an operator, be sure to tell the customer support agent that you would like support related to the installation of Service Pack one (or ‘SP1′) of Windows Vista.

[admin]

Have you tried in safe mode?

I'm afraid I haven't found much information for this issue. I'd suggest you call Microsoft. They offer free phone support for Widows Vista Service Pack 1.

The toll-free call-in number in the U.S. for Vista SP1 help is (866)-234-6020.

Listen carefully to the options on the line as you wait and navigate for support. When you speak with an operator, be sure to tell the customer support agent that you would like support related to the installation of Service Pack one (or ‘SP1′) of Windows Vista.

[djtrype]

On my laptop when I boot up after installing SP1 I believe it's my harddrive "clicking". I'm not sure if this is a hardware issue or due directly to the SP1 install, but I never had this problem prior. I have to reboot and then do a system repair before it works fine again.