Please fill in your System Specs.
Also please confirm your BIOS mode. Is it UEFI or Legacy? This is one key information to deal with this issue. If you are not sure, you can take the help of Partition Wizard Boot CD to do it.
Do you have access to another computer right now? If so, download Partition wizard Bootable CD (the last one in the link). Burn it in a blank CD or in a USB flash stick.
Boot into Partition Wizards GUI following this instructions. When you are on the last screen, take a camera snap of the screen and upload the snap here.
Screenshots and Files - Upload and Post in Ten Forums
We need to see the partitions and parameters.
i don't have another computer right now unfortunately. I purchased the laptop in 2009; would that tell you anything?
- open Command Prompt at Boot using Windows 10 Installation Media.
It will show this prompt: X:\Source>
- Type diskpart and hit enter. It you give you the diskpart prompt, DISKPART>
- Type list disk and hit enter. It will list up the disk and will be back to DISKPART>.
- How many disks does it show? I hope only one, numbered 0? If so, type select disk 0 and hit enter.
It will say 'Disk 0 is now the selected disk' and will bring you back to DISKPART>.
- Type list partition. Hit enter. Now it shows a list of partitions on the disk.
Take a camera snap of this screen and let us see it.
That would be basic minimum information to proceed, to know the partition structure.
Without knowing it, anything would be a guesswork only.
You'll want to get yourself a W10 disk eventually, so put that on your TO DO list.