My daugters Aspire PC with VISTA will not load the latest windows updates.( set to auto but I like to check every so often) The last one it wouldnt update was KB957321, on 31st March or the 1st April . It came up with a error 800B0100. I looked in the help section and it suggested down loading the " system update readiness tool" which I tried to do but it kept on saying I could down load that either. Any suggestions ??