I'm currently(or was anyway) running a dual-booted system with Windows10 and Arch Linux on it. They were each on their own separate SSD and everything worked fine for the most part (had to switch between them using bios boot menu because grub wouldn't recognize windows no matter what I tried but that's another issue). A couple of hours ago I was in working in Arch and there was a power outage. When I rebooted my system the motherboard was freaking out and I had to reset the CMOS to get it to work. However, I can now only boot into windows. If I try to boot to the drive with arch on it, it tells me to insert a bootable image.
From what I've tried so far, I know the partitions are still labeled and sized correctly with the correct file systems (EFI boot, main arch partition, and swap). I suspect that my grub is broken but I'm not sure how to go about fixing it. I have no experience with repair a Linux system since in the past I've just wiped the drive and started over.
I've tried supergrubdisk2 but I just got failures for anything grub.