original title: windows 7 bootmgr is missing HELP!!!!!!!!!!!!!!!!!!!!!

i have a sony vaio laptop with no partitions no nothing just a hard disk with pre-installed windows 7 64 bit home premium. Yesterday i has installing some widgets to my desktop and after i have restarted the laptop windows coudn't start....it says bootmgr is missing. I tryied to use the recovery tools of vaio but the only option is toformat everything and install again windows 7 but i dont want this option.

I have tried almost everything finding on net many answers about this problem but none of them it worked to me. I downloaded a bootable disk to repair the windows i tryied to do it manually from the prompt command but nothing....Its very strange though when i open the vaio recovery tools i can save all my files to an external drive but it appears a partition d: which before didnt exist and have one folder called boot and inside contains a file called bootmgr. I would like if somebody have any idea what to do cause i have this laptop 1 month it it drives me crazy when i am thinking that i need to format everything