Hi,
Thank you for the update.
You may follow the suggestion given by Hairy Scot replied on April 12, 2012 or Hairy Scot replied on April 16 on the following thread given below to check if its helps.
**BIOS Disclaimer:**Modifying BIOS/ complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk.
Hope this information is helpful, if the issue persists please write us back with the information in brief so that we can assist you further.
Thank you,
Morris Subba
Support Engineer