Digital Signature not valid - Unable to install any programs
I am running windows 7 64bit on a Sony Vaio. I am unable to install any programs as it says 'The file was blocked as it does not have a valid signature that verifies it as a publisher' or 'the file is corrupt'. I am also having problems running windows update too. Can anyone help me please?Thanks
February 18th, 2010 12:02am

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