I recently flashed my Asus Tuf Dash F15 (2021) with a CH341a after having an issue with the laptop not booting for 2 years. After I had flashed the bios, I reinstalled my M.2 SSD that I had removed from the laptop when it stopped booting 2 years ago and booted it up, which took me to the bios instead of booting to the hard drive. In the bios, it says "No Storage Device Present". I turned off the laptop and tried using the other M.2 slot but had the same issue. I suspected the problem was that the SSD was dead so I created a USB Windows 10 Installer and plugged it into another Windows laptop I had and it showed up in the device list, I then did the same thing on the Asus Tuf Dash F15 and there were no drives in the drive list. I'm wondering if this is a matter of hardware (M.2 slots don't work) or firmware (bios flashing caused an issue) because I find it hard to believe that both M.2 slots are broken. If anyone has any solutions it would be greatly appreciated