Welcome to the Windows 7 Forums website Volzy! :ciao:
We hope we'll be able to help you out with your issues.
When you did the "upgrade" install instead of clean or "custom" install, Windows 7 will NOT install or run on a FAT32 partition.
You will need to do a clean install to your C drive and reformat it to NTFS, that's the only way to get it to install there.
Windows won't ever let you delete the C drive at all.
Are you running one hard drive or two?
If you're just on one hard drive, you'll have to delete partitions or reformat them to NTFS.
Use Partition Wizard's free bootable ISO CD image and burn it to a CD and then you can boot up from it and change things around.
Use either the native Windows 7 ISO burning software or ImgBurn which is free also.
How to get Partition Wizard Bootable CD
Download Partition Wizard Bootable CD iso file absolutely FREE from
http://www.partitionwizard.com/download.html. Burn ISO file onto a CD using any CD/DVD Burner software.
Why Partition Wizard Bootable CD
* Manage partition without installing anything on your computer
* Manage partition without Operating System
* Restore partition if partition table is damaged causing computer to not boot
* Restore partition if partition is deleted by accident causing computer to not boot
* Rebuild MBR if MBR is damaged
* Analyze partition mapping without having to boot computer
What to expect from this bootable CD
Step 1: Choose boot disk
I hope this helps you out some.