Puzzling x64 Problem in Hardware Hangout Posted April 15, 2008 Bought a new Athlon64 x2 4200+ and an Asus M2A-VM motherboard. Tried to install Vista x64, and it fails at 1%. After a few hours of trying different RAM, fresh DVD, diferent optical drive, etc... I tried to install Vista x86. Vista x86 (With SP1) install with no problems at all.Tried x64 again, and it failed at 1% (again). Any ideas on what would cause an issue like this?