Yes, you can reinstall Windows without a product key.
Yes, you can reinstall Windows without a product key.
I don't see any distinction between "how to enter administrator account" and "how to make a workaround, remove everything because I can't do it, and enter administrator account (this time) anyway." Files on the hard drive aren't encrypted (mostly), so if anyone wants to copy them — it's not a major issue — whether with or without a password.
This topic isn't about the main goal. Talking about gaining access to Windows admin accounts would be public here, and it seems to conflict with the forum's guidelines. While it's technically possible to breach such accounts, there are many resources available online, but from my experience, this platform isn't suitable for sharing those kinds of instructions.
Not always. Restoring Windows would also wipe the information from that storage device. Even if your data isn’t crucial for you, others could still obtain it. The instructions for accessing an account would remain accessible to anyone trying to reach data they shouldn’t have.
LGA775 is simply a CPU socket, but its role extends to BIOS and affects whether a Windows install is linked to the BIOS—sometimes referred to as BIOS locked. This means if the installation was an OEM setup or done on a compatible BIOS chipset, like a Dell OEM disk on a Dell machine, Windows 10 will activate automatically. Ensure you have a Dell OEM DVD for Windows 10 and the conditions are met; then activation won’t be necessary. A quick way to verify is using a spare HDD or a recovery partition with your system’s hotkey to reset data. However, even then, you might need an admin password, so consider a password recovery tool to clear the account before attempting a factory reset. This process may succeed or fail depending on the situation.