Tech geek. Life geek.


Change Logs of the BIOS of B450M DS3H

I mentioned the upgrade of the motherboard BIOS, B450M DS3H rev1.0. But I forgot to describe the difference and changes.

1) There is no need to go into the BIOS settings to do anything. I just restart the computer to make the new BIOS work.

2) Change Logs


  1. Update AMD AGESA B
  2. Improve system boot time
  3. Improve RAID function compatibility
  4. Improve PCIe device compatibility


  1. Update AGESA ABBA
  2. Improve Destiny 2 gaming compatibility
  3. Correction of PCIe Gen4 being disabled when using a 3rd Gen Ryzen (Matisse) CPU due to this AGESA


  1. Update AGESA AB
  2. Improve M.2 SSD compatibility


  1. Update AGESA for next Gen. AMD Ryzen™ CPUs full support


  1. Improve USB device compatibility
  2. Improve Q-Flash compatibility


  1. Improve USB compatibility


  1. Update AGESA for Athlon 200-series (Raven2) APU and further new CPU support
  2. Improve USB compatibility


  1. Improve USB device compatibility

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Upgrade B450M DS3H BIOS to latest F50

It is my desktop PC‘s motherboard. Gigabyte B450M DS3H. This post focus on its BIOS.

The original BIOS version shipped with the MB is F4. From my old post, you can see it.

Gigabyte B450M DS3H


Before I upgrade it today, it is already F42.

B450M DS3H F42B Bios

I can not remember when I upgraded it. So just forget it. I am going to show you how I upgrade the BIOS from F42b to F50.

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Error code 0x490 after updating BIOS

My desktop motherboard has a new BIOS released. Current one is E7786AMS v1.6; the new one is v1.7, which fixed some USB problem.
So as my habit, I like to keep things updated.
I downloaded the BIOS zip file from MSI official site for A55M-P33
Unzip it and put the files into a USB disk with FAT format.
Then, plugin the USB disk, restart the PC and hit DEL key to BIOS setting,click M-Flash, choose Select One File to Update BIOS.
It gave me the choice of USB disk and bios file.
It took less one minute to write to BIOS. When done, it auto-reboot.

Then I have the problem here. It can not load Windows 7 64bit. Even I tried to use the fix tool. Still not work.

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Some tips for Upgrade Windows 7 on Brand name PC

Say, there is a ASUS Laptop, which is shipped with Windows Vista. Now the user want to change it to Windows 7. Here is the tips to upgrade it.
1) Backup up the user files to a safe place. Maybe USB disk or NAS.
2) Go to the official site of Asus, download the latest BIOS and upgrade it to the latest one.
3) Check the BIOS with the tool, Everest Ultimate, or any other tools you like, see if SLIC 2.1 included in the BIOS.
4) If there is SLIC 2.1 , it is ready to install Windows 7 without problem. Just download Windows 7 OEM iso and install it, fresh install or upgrade, both are fine.
5) if there is SLIC 2.0 only, there is something to do.

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Make a bootable USB disk to flash MB BIOS

Sometimes I need to flash the mother-board BIOS from DOS. Actually now I have not tools can boot the PC to DOS. There is no floppy disk driver on it. I can only make a DOS bootable USB disk to do the job.

So I have the USB disk on hand. It is 2GB, the smallest capacity one I have.

The method to make a bootable USB disk is a little bit different from the one I blogged 6 years ago.


1) Download flash tools – HP USB Disk Storage Format Tool (Please google it and find the download link by yourself)

2) Download DOS package , named Win98 boot. (Also try to google it)

3) Decompress these two file.

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What is UEFI?

What is UEFI, I mentioned it at What is GPT, but not clear. Here I would like to give more details about it.
The Unified Extensible Firmware Interface, UEFI, is a new firmware interface specification that is designed to replace the familiar BIOS interface.
When turn on the computer, UEFI’s firmware will run an inventory of the hardware installed on the system; after checking that everythinkg is functioning properly, it will launch the operation system and turn control of the PC hardware over to the software. UEFI supports a wider range of chip architectures, including 32-bit and 64-bit processors like the ARM chips, than does BIOS, which is limited to running on 16-bit processors.
The new spec works very well, and nearly all UEFI firmware images include support for older BIOS services, so it has no problem upgrading from a motherboard flashed with BIOS to one flashed with UEFI.

What is GPT

GPT stands for GUID Partition Table.
The widespread MBR partitioning scheme, dating from the early 1980s, imposed limitations which affect the use of modern hardware. Intel therefore developed a new partition-table format in the late 1990s as part of what eventually became UEFI. The GPT as of 2010 forms a subset of the UEFI specification.
To use GPT for partition, the system has to meet the following requirement.
New motherboard with UEFI support.
Linux has native support for it.
Windows 2008, Windows 7, only 64bit support it.

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Flash Bios without command

Acer Aspire One A110 has new bios released. I want to update it.
1) Download bios package from the official site.
2) I use the windows flash tool to update it.
3) Restart the netbook.
It is failed to boot up. When I press power button. It start to boot. I can go into CMOS setting by F2. But the fan is running so noise and after 10 to 20 seconds it power off automatically.
I can not even get into command promote.
I google it and find the solution.

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1 long beep A memory problem: remove and reseat memory.
1 long, 2 short or 1 long, 3 short Video card problem or problem with its memory.Replace the graphics card or its memory.
Continuous A memory and/or video problems. Reseat or replace
memory and/or graphics card.
1,1,3 CMOS unreadable. Replace the motherboard.
1,1,4 BIOS failure. Replace the BIOS.
1,2,1 The timer chip has failed. Replace the motherboard.
1,2,2 or 1,2,3 or 1,3,1 or 1,3,3 or 1,3,4 or 1,4,1 or 4,2,1 or 4,3,1 or 4,3,2 or 4,3,3 Motherboard error; replace it.
1,3,3 Memory problems. Try reseating or replacing RAM.
1,4,2 Faulty memory. Test and replace your RAM.
2,any, any Any beeps after two indicates bad memory. Run a
memory checking utility and replace RAM as necessary.
3,1, any Your motherboard has a faulty chip; replace it.
3,2,4 Keyboard controller error. Replace the keyboard,
controller chip, or the motherboard to resolve it.
3,3,4 No video card. Try reseating it or replacing it.
4,2,2 or 4,2,3 Replace the keyboard. If this persists, it’s
a motherboard problem; replace it.
4,2,4 Remove and replace all PCI cards one by one to find
the faulty one, then replace it.
4,3,4 Clock error. Reset the motherboard clock using
its set-up program. Replace the CMOS battery if
necessary. If this fails, replace the power supply.
4,4,1 or 4,4,2 Use the motherboard manual to disable the serial
ports and add an I/O card to replace them.
4,4,3 Maths coprocessor malfunctioning. Use a low-level
diagnostic program to confirm this, then disable it.


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