My desktop can not boot up since last Friday. I did a BIOS upgrade. Then I click restart after successfully flash the new BIOS file into the Gigabyte B450M DS3H motherboard.  It is the last time the PC show the screen. The desktop was a black screen. No Beep, it means it did not pass the POST.  So the keyboard is not working. I can not even hold the power button to turn it off.

Anyway, I believe the BIOS is broken and the motherboard is dead.  When I do the flashing, I follow the instruction. Use a USB disk, put the latest F62b bios file, which I downloaded from the official Gigabyte website, into the USB disk. On boot, click the DEL key to enter the BIOS screen, BIOS, Q-Flash. Update BIOS. Select the BIOS file on a USB disk. click update the BIOS, Finished then Reboot.  Finally, it does not wake up anymore.

Above is the background of the story and why I need a repair for my desktop. Now I am going to the main part of the post.

I order a new ASUS Prime B450M-A II AMD AM4 MicroATX motherboard. The release date of this motherboard is Oct. 2020. Almost one year.

The box I received is actually has a stick on it. Said “AMD Ryzen 5000 Desktop Ready”. The shipping motherboard with BIOS v2807.

The price on is $99.99 when I make the order. Added TAX is $111.99

This board is quite similar to the other B450M board, including the Gigabyte one. I would like to point out some features I like very much.

  • 4 DIMM, Max 128GB, DDR4 support from 2133MHz  —– to 4400(OC).
  • Three graphic ports: HDMI 2.0b, DVI-D and D-Sub.
  • BIOS Flashback function.
  • 256MB Flash ROM



The procedure is quite simple for me. I always DIY my desktop computers.

  1. Disconnect the power cord. Press the power button to release the electricity.
  2. Disconnect the cables attached to the OLD motherboard. Inside and back outside.
  3. Remove the screws
  4. Take out the OLD motherboard. The CPU is still attached to it.
  5. Remove the back-panel I/O shield
  6. Remove the heatsink
  7. Remove the CPU
  8. Put the CPU on the NEW motherboard
  9. Put the heatsink on it
  10. Install the New I/O shield panel on the back of the case
  11. Add two screw feet on the case, new motherboard need eight
  12. Install the new motherboard into the case, be careful with the backports
  13. Fix it with 8 Screws
  14. Install two memory  stickers, 2X16GB
  15. Install a M.2 storage device.
  16. Connect power connectors, 24pins and 8 pins.
  17. Connect SATA HDD and SATA Bluyray burner
  18. Connect USB  cables for front panels
  19. Connect the case Fan
  20. Connect all the rest cables for power, HDD light, Reset button etc.

Now it is time to give it a trial run.

I am lucky. The first boot is good. Go into the Bios to have a look and save, exit.


It is great. The computer is quiet.

Before I made the order, actually I did a lot of research. I consider the MSI B550M PRO-VDH, ASUS Prime B550M-A/CSM, and a lot of others. I still believe B450 chipset is good enough for Ryzen 5 2400G. If I upgrade the CPU to Ryzen 5 5600G, B450 can still support it.

New features from B550 are good, but I don’t need them. Such as PCIe 4.0. And B550 doesn’t support my Ryzen 5 2400G CPU.


David Yin

David is a blogger, geek, and web developer — founder of If you like his post, you can say thank you here

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