Cant Install Windows 10 on GPT drive, Legacy Boot Required

[AndinAl]

I need to reinstall my windows cause the loop bluescreen boot and i need to save my 😧 data.

I use usb to boot windows installation, and my HP laptop require legacy boot to enable so my laptop able to boot via flashdrive.

But when it comes to Installation part, i cant install to my main drive cause it GPT format. So i heard that i have to convert it to mbr, but i cant convert it via diskmgr instead i have to clean my disk first where main my purpose is to save my data. Do i have to, insert my hardisk to another pc to save my data first, or theres another way around it?

All response will be appreciate, sorry my bad english

[CherylG]

Unless your laptop was an original Windows 8 machine you shouldn't have to boot in Legacy mode. If the usb is prepared correctly for UEFI it should boot without legacy enabled:

https://www.windowscentral.com/how-create-windows-10-usb-bootable-media-uefi-support

[WAWood]

@AndinAl

More often than not, Bluescreens of Death (i.e., BSODs) are hardware-based, and if that is the case with yours, forcing a reinstall of Win10 is going to do nothing to fix and, and most likely, that will fail during the process.

What I suggest is that you go to the forum page I will link and look up information on your BSOD:  https://www.tenforums.com/bsod-crashes-debugging/

Based on the information you find there, you can then decide if a Win10 reinstall will fix the problem. 

[wangqiang]

You can try a free GPT to MBR converter, which can help you to realize conversion from MBR to GPT and GPT to MBR without deleting or formatting the partitions in the target disk.