Windows 7 overrides windows 10

[MR Toaster]

Hello all,
I recently (last week) built a brand new computer and successfully installed Windows 10. it worked great. i later (today) wanted to wipe a laptop HDD. i installed it in the computer alongside the windows 10 HDD. the Windows 7 laptop HDD overrides windows 10. i figured this was just normal. i then uninstalled the laptop HDD from the computer. when i again tried to boot with just the windows 10 HDD, it didn't work. it said i did not have a HDD installed and refused to boot. Can anyone help me?

Thanks in advance, MR Toaster.

 

[Barty1884]

Have you set the HDD with Windows 10 on it as boot priority #1 in the BIOS?

Depending on the configuration in there, the port you attached the W7 drive to was likely priority #1 - so it booted there first.

 

[MR Toaster]

Have you set the HDD with Windows 10 on it as boot priority #1 in the BIOS?

Depending on the configuration in there, the port you attached the W7 drive to was likely priority #1 - so it booted there first.

At this point i don't care about the laptop HDD. I can fix that in a different computer. Currently, I just want to get the W10 working. But, when I boot, it goes to the MoBo startup screen, and then gives me the error "Reboot and Select proper Boot device or insert Boot Media in selected Boot device and press a key"
I have restarted many times, and I have pressed "any key" multiple times. it just relays the command.

~Thanks, MR. Toaster.

 

[Barty1884]

Enter your BIOS, disable (or enable.... just the opposite of what it current says) CSM/Legacy support and Fastboot

 

[MR Toaster]

Thank you so much! I did a quick look-up and found this : https://superuser.com/questions/857117/what-is-csm-option
I simply pressed "Load optimized defaults" and the problem was solved! Thank you!
I will now try to plug in the laptop HDD and wipe it. Anything you can suggest?

~Thanks again, MR. Toaster.

 

[Barty1884]

I suspect it was an OS dependent setting (legacy/CSM/Fasboot etc) that was matching the W7 OS moreso than the W10 OS.

Provided the settings remain unaltered in the BIOS and the W10 HDD/SSD is set to priority #1, it should boot to it, with the W7 drive being secondary.

 

[MR Toaster]

I got it to boot into windows 10 with the laptop drive installed. Now, how would I completely remove all files from the drive?

~Thanks, MR. Toaster.

 

[Barty1884]

It depends. Is this for reuse or disposal?

For reuse by the original user (or someone they trust), you could just format it inside Disk Management and then it can be used as a storage drive, or an OS reinstalled etc.

If it's for disposal (or to sell a laptop with a drive), there are freeware programs out there that will write zeros to the drive...... which makes it harder to recover data - but not impossible. For those uses, a new driver would be more recommended.