Stuck trying to install Windows 7 Ultimate on X120e

I just got my x120e yesterday and it came loaded with Windows 7 Home Premium. Since my college offers free Windows 7 Ultimate I decided I would go ahead and install that, plus since I bought the computer used I figured that would be a good clean start. So I downloaded the software and used the windows tool to put the .iso file onto a thumb drive.

When booting the x120e with my thumbdrive inserted it goes into the windows installation guide. The problem starts where it asks how I want to do the install, Upgrade or Custom. From the directions online and using google it seems I am suppose to select 'Custom' install. Then it asks where I want to install windows: Disk 0, Partition 1(system_drv); Disk 0, Partition 2; Disk 0, Partition 3(lenovo_recovery). When you highlight Disk 0 Partition 1 or 3 it says 'Windows cannot be installed to ...'. Disk 0 Partition 2 includes the bulk of the storage size, but when I highlight that one and click 'next' it comes up and says 'Setup was unable to create a new system partition or locate an existing system partition. See the setup log files for more information'. Also, I am unable to find anything called 'setup log' to get more information.

* I did format the Disk 0 Partition 2 after it didn't work the first time

I decided from googling that maybe I needed to add a hard drive driver in order for it to work. So I went to the Lenovo driver page on my other computer and put that on the thumb drive and loaded the driver in the windows install wizard. This had no effect though and the problem is still there.

Given I've never loaded an OS before so I'm relying on online instructions and google. I have literally spent close to the last four hours working on trying to install Windows 7 Ultimate onto the x120e and am going to get some sleep and try again I guess.

* I haven't changed the hard drive or anything, this is using the original 250gb hard drive it came with

 

Custom is the right place to be. Delete all the existing partitions you see. Start the install on the unformatted partition. You will lose your recovery partition (the lenovo setup with Win 7 Home Premium).

 

Thanks for the reply. I highlighted each partition and hit delete. Now the only thing that shows up is 'Disk 0 Unallocated Space' at 232.9GB. When that is highlighted and I click 'Next' I get the same warning as before. "Setup was unable to create a new system partition or locate an existing system partition. Se the Setup log for more information." Under this Disk 0 Unallocated Space, the options for Delete and Format are grayed out, only Refres, New, and Load Driver are active.

Anymore ideas?

NEVERMIND: I realized I had to click New to create a new partition to install onto.