Annoying Autokms

So basically here's the story in short : I , a humble windows user, got an nvme and went to the nearest repair shop to get it installed and to have windows installed alongside that. So my OEM laptop (HP Pavilion 15 cu 1000 series) came with win 10 home edition. And he said ok. Then after everything was done , I paid him 5000lkr which um kinda made me nervous because I've heard that OEM hardcode embed the activation key or something to your motherboard. But I didn't go to question him and came home. Then I started the laptop (Note that alongside my nvme is a secondary HDD with win 11 24h2 installed). Once I signed in, there was a local account already created. And the UI felt off so I ran winver and what did it say?

The windows 11 Enterprise operating system..... I was genuinely surprised but the fact that it was running on 22h2 was a bit odd. 'He might've used an old usb installation' that was what I thought. I went ahead and updated 22h2 and yea thats when it popped up ... Windows security: Threat detected [Hacktool autokms ] something like that. An illegal activation? I'm not mad but why did I pay him 5k? seriously? Also now I regret not questioning him when he asked for money. I can't downgrade to home, plus it's not safe, so that thing must be wiped out alongside the drive. But I don't have a way to get an installation media and even if I had one , can't proceed because it might tamper with the boot files on my HDD. I'm not a technician so I can't open the laptop and physically remove the HDD either what should I do?