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My wife's desktop is pretty old: AMD A4-5300 with 8 GB DDR3. Good hardware, but not enough for the modern web.

Today I've bought a used Dell OptiPlex 3080 MFF with i3-10100T, 8 GB DDR4 and 512 GB SSD for 700 PLN ($174) in shop. It doesn't have Wi-Fi card, but I have one. Also I have a 16 GB DDR4 module.

Surprise: the BIOS has admin password, and there is no more "CMOS reset" jumper on the motherboard. You can press power button for 20 seconds, and it resets some settings, 🧵

Alexey Vazhnov

but not the password.
And the boot order is locked, so I can't just boot that I want, from my drive, even with security boot disabled in BIOS.

I've checked the PCIe Wi-Fi module: when it plugged, PC starts without an error message, as it could be with BIOS locked to DELL-only adapters.

So tomorrow I will return it back to the shop.

For curious people: you can search in the Internet for "dell 8fc8 bios unlock", I had no luck. Nice site bios-pw.org doesn't support my version.

bios-pw.orgBIOS Master Password Generator for Laptops