Windows 7: Installation partition

Hello everyone, I have come across a weird problem (or at least have searched for hours and not found anyone with the same problem) I installed Windows 7 Home premium this morning on my new computer, its a brand new hard drive that was completly formatted, everything went well but once the installation was done i went to My Computer and it says "0.98gb free of 1.36tb" But i have nothing on the computer, so i checked for partitions ect in computer management and find i only have 216mb unallocated space. I have been searching for a fix all night and in the end decided maybe it would be best to full format and reinstall windows but i cant format the HDD and when i run the windows disk it does not even find the HDD anymore. I was hoping someone here knows how to fix this or has had the same problem in the past, any help would be great, thank you.

[Also] Okay through computer managment i have found 1.3tb of the hard drive is "Primary Partition" for System,boot,pagefile.. and so on and as you cant delete a partition that is system im stuck, i have tried shrinking it but it will not let me do that either and because of how big the primary partition is i dont have enough room to move all the system files.

1. Run WinDirStat to see what is on the disk. Post the result (picture) here.
2. Post a picture of your full Disk Management.

First, fill out your system specs in detail. It will save people from having to ask you about hard drive brand and model, motherboard brand and model, etc. What version you are running if there were revisions (especially for the motherboard) would be helpful too.

You should also post your Disk Management screen. Click the Start orb, then in the "Search Files and Folders" box type "Computer Management", then click on Disk Management. You can use the snipping tool to nab a screenshot.

EDIT: You're fast, whs!

okay running windirstat now and here is Computer management

You beat the record. We should put that into the Guiness book of records.

1. click on the little + in front of data to see the detail
2. What do you see when you click on the blue stuff

Have put all the specs i know in, will be able to complete all of it tomorrow as my brother helped me build this as he is an IT Teacher, i also asked him about this problem but he could not solve it either. Thank you for the replies aswell, this seems to be a very friendly site.

Woah, i see hundreds upon hundreds of films, all exactly 1gb each, although this was a custom install so everything should have been deleted?

They are all [.vob] files located in C:\DE\shares\My Movies - DVD but going through My Computer i cannot find that path