Windows 10: Boot drive changed after upgrading from windows 7

I updated my daughter's Toshiba Satellite c655-s5125 Windows 7 computer to Windows 10.
Now it won't boot. I am able to get to a Command prompt though.



From what I've been able to tell it wants to boot to an X drive, but I ran diskpart , here's a pic attached. I don't know what happened.
I've tried safemode, installing fwindows 19 from a usb and nothing.

Thanks for your help.

:)

 

Windows 7 booting off wrong drive?!?!?

Please move if this is in the wrong place.

I have two hard drives, a 1.5TB drive, and a 160GB drive. Windows is installed on the 1.5TB drive, as are all my files and programs. The 160GB drive has a bunch of old files, and apparently the bootmgr and boot folder. Nothing else is on the 160GB drive, other than media files etc.

If I remove the 160GB drive from the machine, windows refuses to boot, plug it back in, it works fine. The setup with two hard drives I have now is temporary, as the 160GB drive will go into another machine.

My question is, can someone give me a step by step on how to make windows force to boot off the 1.5TB drive, ignoring the 160GB drive in the boot process completely?
I don't know how to do this in Windows 7, on XP I would just run the /fixmbr command and its related ones.

Any help would be appreciated.

Note: I would really really rather not have to wipe and reinstall, I know it can be done without one as I've had this issue with XP before.

 

AMD data change.......no boot up problem

1st: go to bios, check boot device TYPE priority (cdrom/hdd/etc.)
then, go to hard disk drives (still under boot category), and check if your system hard drive is at 1st place (IF you have more than 1 hdd)
2nd: if your bios boot settings are OK, run windows 7 installation disc, go to repair your system, run fixmbr and fixboot options (i think they are at same option on windows 7 repair - startup repair or something like that)
3rd: if your windows 7 installation disc cannot find your windows 7 installation, reinstall it, but take care - you may have bad sectors on your hdd

please, go step by step, and dont read 3rd step warning before you try 1st and 2nd xD

you can also disable "LAN boot ROM" option under "integrated devices" bios category to never see that meesage again (at least 3 NVIDIA Boot Agent lines xD )

 

Windows 7 & XP Boot Problem

I did as that said, and was able to get back into Windows 7, but I did not have the option of going into XP. Response two on that page deals with that and says...

I did all that, upon rebooting Windows XP was listed as an option but selecting it doesn't work. I get a message saying something is missing or corrupt. I'm confused what drive letter I was supposed to use during the quoted method of adding XP support. While in Windows, the drive with XP is labeled as E:, but if I go into Windows setup it says the drive with XP is called C:. I had put E:, so perhaps it was supposed to be C...but while in Windows 7, the Windows 7 drive is called C:.

My current situation is that XP wouldn't work at all, but 7 would. I decided to reinstall XP again to be in the same situation as before. I'm unsure how to get them both working.