How do you to install Windows 10 on Racing P1 ?
Because Racing P1 only support Windows 10 64bit UEFI installation, you need to create a Windows 10 64bit UEFI bootable USB disk.
You may refer to below method for USB disk creation.
Step 1: Visit this page and download the latest version of Rufus. Rufus is a portable utility and hence doesn't require an installation.
Step 2: Connect your 4GB+ USB drive to your PC where you have installed Vista, Windows 7, Windows 8, or Windows 8.1. Be sure to backup all data from your USB drive.
Step 3: Run Rufus utility. Click Yes button when you see the UAC prompt to launch the tool.
Step 4: Under the Device section, select your USB drive that you want to make bootable, select Partition scheme and target system type as GPT partition scheme for UEFI type on your PC.
Step 5: Next, select the File system as FAT32 (default) as it supports both BIOS and UEFI.
Step 6: Enter a volume label, click on the CD/DVD drive icon to browse to the Windows 10 ISO image file. Select the file.
Step 7: Finally, click Start button, click OK button when you see the warning dialog to continue its job.
Once Rufus completes its job, you'll see 「Done」 message. That's it!
You can now open UEFI settings and make necessary changes to boot from USB drive.