Ok, try this:
Pick Advanced option > Command Prompt
Enter the following commands
lis dis is shorthand for list disk - it will tell you if you have more than one disk installed
lis vol is shorthand for list volume - it lists the volumes it can see
I don't know how to help upload an image - I only occasionally use a mobile device.
Unfortunately this means that you have to type what you see - I don't need all of the text, just the relative info.
I struck the stuff you don't need to type and bolded the stuff I want to see (red is important)
DISKPART> lis dis
Disk ### Status Size Free Dyn Gpt
-------- ------------- ------- ------- --- ---
Disk 0 Online 596 GB 130 GB
If there is an astersik in the GPT column - that is important - it tells me the way the disk was initialized (MBR or GPT)
DISKPART> lis vol
Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 0 U DVD-ROM 0 B No Media
Volume 1 System Rese NTFS Partition 500 MB Healthy System
Volume 2 C 10 Boot NTFS Partition 40 GB Healthy Boot
Volume 3 D 10 Data NTFS Partition 10 GB Healthy
You can shorthand some of it
vol # for Volume #
NTFS for NTFS Partition
Sys for System
Using the above example, this should suffice in shorthand
vol 1 Sys NTFS 500 MB Sys
If the Status column is helathy, you can exclude that unless it is NOT healthy
What I'm looking for is the System and Boot information.
The size might matter, but I don't think so with the issue on your machine.
Any chance you could ask a friend to let you use their machine to create some utility disks?
These two would be very helpful to have (each fit on a CD):
MiniTool Free Bootable Partition Manager | Partition Wizard Bootable CD
This is the utility that will help the most ... it will at least allow you to look at the disks, partitions, and volumes.
How to create a Bitdefender Rescue CD
How to scan your computer with Bitdefender Rescue CD
There's also a file manager that might help