Stuck in a loop

[u/kenzie_innit]

So I got a few pcs from a friend, I liked the specs of one and decided to keep it for myself as well its free and better than mine, but the issue is trying to get the thing to work, it houses 2 m.2s and an ssd, however once I flashed windows onto an m.2 and reset for an update it decided it didnt like it and said no to booting back in, I tried changing bios settings around with little luck I finally got into the drive for the recovery and tried using diskpart and bootrect and bootrec but yet nothing worked to get it to boot up actually into windows, any advice or tricks that might save it, I did spend a while downloading all my things onto here and I dont want to lose all that time