vistasp2 install error

bundejo

Estimable
Apr 7, 2014
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Automatic update for vista service pack 2 64 bit install giving error 8007371c.. I have sp1 currently. I have the sp2 file downloaded for manual install as last resort. Any other ideas? Its my sisters family pc so losing any of their stuff isn't an option. I replaced cmos battery, psu and cleaned it thoroughly but damn sp2 giving me trouble.
I've tried, https://support.microsoft.com/en-us/kb/971058 and a few of the cmd commands said they didn't work I don't know all that about dos.