Hi Serg008 Thanks. The linked bios works well with OEM-Activation of vista/7/2008/2008r2. For vista/7/2008/2008r2/2012 it should be a slic 2.2 Bios. For vista/7/2008/2008r2/2012/2012R2 ist should be a slic-2.3-Bios from DELL. Any possibilities ?