2100: Detection error on HDD0 (Main HDD) - problem with motherboard

Answer is very simple. Remove the battery and put it back again. It works. Same thing happened with me. I could fix it same way.

"If you can, you can re-flow or change that connector,

Otherwise quick solution is to buy a dvd to hdd or dvd to ssd caddy and throw in the ssd or hdd. You can buy another usb adaptor or enclosure for that dvd drive."

I simply solved the problem by changing Legacy First mode to UEFI First mode in the Startup options of the Bios menu

"A cut off a bit of a dish washing sponge. Don't what those are really called, but I think you know what I mean.

One piece behind the HDD and one between the HDD and the lid. Works perfectly!"

I used legos for the same issue! Mine was an issue where the SSD was smaller than a traditional hard drive.

It really worked tq.