Is the problem that you converted your HD to Dynamic which is only meant to be used to span a partition across multiple HD's? Apparently you didn't see the warning message.
If so the solution to solve this non-destructively is to boot free Partition Wizard CD version 4.2 which is the last one which offers this as a free feature: pw422.zip ISO - Windows Live.
Download the ISO, rightclick to burn it to CD using Windows Image Burner, or use ImgBurn
Boot CD. You will need to delete the extra partition(s) you created which tipped it to convert to Dynamic before it will convert back to Basic.
Then follow these video steps: How to convert dynamic disk to basic disk with Partition Wizard?
After conversion if you want help adding a partition post back a screenshot of your maximized Disk Mgmt drive map with listings, using the Snipping Tool in Start Menu, attached using paper clip in Reply Box.
If you're not sure whether you did this then post back the screenshot now.