Question Windows won't start without Lauching CSM mode thru BIOS.

[//Kers]

I recently upgraded my motherboard and CPU, when i tried to boot up I was taken straight into the BIOS. Windows wouldn't boot and BIOS showed that I had no available bootdrives.
I couldnt get windows or my SSD's to show up until I launched CSM mode.
How can i boot windows without CSM mode? Ive tried a fresh install of windows and the same keeps happening.

 

[kerberos_20]

Ive tried a fresh install of windows and the same keeps happening.

disable CSM and reinstall windows from bootable usb windows media

 

[hotaru.hino]

If you installed Windows with CSM on, it's setup to only boot with CSM on. You have to reinstall Windows to use it with CSM off.

 

[//Kers]

disable CSM and reinstall windows from bootable usb windows media

How can i reset my pc without Windows? Everytime I "reset my pc" it only gives me an option to reinstall windows from the same device.

 

[hotaru.hino]

How can i reset my pc without Windows? Everytime I "reset my pc" it only gives me an option to reinstall windows from the same device.

What do you mean "without Windows"? The "Reset my PC" feature in Windows is basically an in-place reinstall. However, I'm not sure if it actually works if you changed the CSM setting. You may have to reinstall by using an install medium and installing the OS on a cleaned OS drive.

 

[Colif]

Reset this PC doesn't change the partition structure, it can't as its installing windows from those partitions. It uses a windows image file to reinstall itself, which is on one of the partitions on drive.

You need to do a clean install after changing CSM settings to get what he wants.

Or he uses MBR2GPT in windows and then swaps CSM settings to do it without a clean install - https://it-infrastructure.solutions/how-to-switch-from-legacy-to-uefi-boot-mode-mbr2gpt-convertion/