DELL inspiron 15R cant boot after re-partition

I defragged, shrank my win 7 partition in windows but for some reason Win7 is still taking up 400G of my HD! so i re-boot from Ubuntu live USB, go to gparted and shrank th epartition down to ~230G and yes of course I now can't boot into Windows. I have Dell win7 prof SP1 64bit reinstallation disk and Dell drivers and utilities disks. the HDD currently has 3 allocated partitions: 'diag' fat16, 'recovery' ntfs and 'OS' ntfs which has a red '!' next to it when i look at it from a liveUSB ubuntu boot.


brand new computer so no data to save/recover


thank you in advance