For troubleshooting and making sure of a best result, worth your time and effort:

Give it a new coin cell batt, CR2032

Clear CMOS and adjust BIOS settings to match system hardware.

Verify that USB drive is created using Windows creation tool

Verify that HDD/SSD is in good condition

Now, start the installation again

A couple of tips in addition:

Make sure BIOS SATA Operation is set to RAID Autodetect / AHCI.*

Flash drive used to load Win10 should be formatted to FAT32 and be at least 8GB.  Download Windows 10 Disc Image (ISO File) 

I'm sure your HDD/SSD is already formatted to NTFS using GPT partition scheme if you ready had Win10 on it.

I'm wondering if the power loss somehow corrupted Win10 or BIOS.  *Make sure you can access F12 BIOS.