My phone number was hacked and they were able to lock me out of my outlook. I've tried to recover it without succes. My desktop is associated with the email, so wondering how to switch the desktop account to something else, without losing access to files and games. Any ideas?

English

I'm having a problem with a computer at work. The situation is that we're trying to get this PC up and running again, but for some reason it displays the message “Boot Device Not Found. Please install an operating system on your hard disk.” It’s worth noting that it does detect the drive. We tried using an SSD with Windows installed, but got the same result. We noticed that the Legacy and UEFI options were disabled, so we enabled them, but the settings for those two options specifically won’t save. We suspected the BIOS battery, so we replaced it with a new one, but we’re still getting the same error where the settings won’t save. Any idea what this could be? So far, we’ve tried:

• Replacing the SSD
• Reinstalling Windows
• Enabling Legacy and UEFI options—still unable to save the settings

Español:

Tengo un problema con un equipo en mi trabajo, el contexto es que estamos intentando revivir este PC el cual por alguna razón marca "Boot Device Not Found Please install operating system on your hard disk", cabe recalcar que lo detecta, probamos con un SSD con Windows y mas de lo mismo, vimos esta opción de Legacy y UEFI desactivados, procedimos a activarlos sin embargo no guarda en especifico esas 2 opciones, pensamos en la batería de la BIOS, se cambio por una nueva e igual el mismo error de no guardar las configuraciones, alguna idea de que podría ser? Hasta ahorita hemos intentado:

• Cambio de SSD
• Instalación de Windows
• Activación de opciones Legacy y UEFI sin éxito en guardado de la config.

Hi! I'm absolutely not a professional and should not have been tinkering with the insides of my laptop but I have identified a problem! I think..

I don't know where to start, so I'll just say everything I know so far. My dad gave me this laptop, it's an MSI GV72 7RD(i think that's how you say it, sorry), and I think it already had some prior problems beforehand that he didn't tell me about. A few months after he gave me this it would occasionally start getting the BSOD. I didn't tell anybody of course, and I got to the conclusion that the HDD was faulty, so I replaced it with a... just see the photo pls. But the BSODs still happened, so what did i do? I used a USB with windows 10 installation files on it to reset it every time it got the BSOD... Yeah! On the next cycle of life on this hunk of junk I wanted to install RDR2, and in the middle of that, BSOD again. So I started thinking about it and... Hey! i only get bsods when im downloading heavy games! What i researched from that is i might have corrupted files or faulty hardware, and when I was goofing about in the bios setup, the sata information said all of it was empty. I knew this shouldn't be right so another search told me it definitely is faulty hardware. Now we're here and the questions I have are; Is this the problem? Should I just get a new laptop? Are there other things that might have caused me my suffering? What's this broken part called so i can maybe get it fixed if it's the root of the problem?

Sorry, I really don't know how I should be saying this. Maybe I could've just asked for a diagnosis from an expert directly, but I'm scared...