How to fix hyper transport sync flood error

While you start or restart your system, you may have come along an issue stating, “Hyper transport sync flood error” at your initial start-up screen. Now, if your system boots successfully, even when the error exists, it may change the system date & time to factory default. This, in result, will force the user to change it after every start or restart.

If you are also the one facing this error issue, you might have got quite irritated till now. So, today, to resolve this error issue, we have brought you some trouble-shooters. But before you jump in to try them at your system, have a look at the prime reasons for the “Hyper transport sync flood error.”

Reasons for the “Hyper transport sync flood error”

How to fix hyper transport sync flood error

The primary reasons for the “Hyper transport sync flood error” occurrence are the following:

  • Unstable overclocked frequencies.
  • Faulty CMOS battery.
  • BIOS glitch.
  • Insufficient power supply through the PSU

After knowing the main reason for the “Hyper transport sync flood error,” we can now next move on to try their fixes.

Fixes for the “Hyper transport sync flood error”

Solution 1- Disable Overclocking

When the signals on the HT bus are in a non-functional state and make several operations impossible to perform the sync flood error might occur.  In a few cases, there could be a hardware fault, but mainly if the BIOS has misconfigured the chipset or CPU. Due to this overclocking, your system might be unable to supply enough power.

To recover from this situation: reducing overclocking frequencies might help. You can try overclocking the frequencies of both GPU and CPU and check if it helps. In some cases, restoring the frequencies to factory default may also help.

While you manage to overclock the frequencies to default, try restarting your computer a couple of times. Once done, you must now check the “Hyper transport sync flood error” persists.

Solution 2- Check the CMOS battery


While in every restart the date & time resets, it gets most likely caused by a CMOS battery. CMOS battery means Complementary Metal Oxide Semiconductor. It is typically a CR2032 Button cell and located somewhere on the motherboard. It is responsible for storing information like time & date and other system hardware settings.

In case anytime you figure out that your system is suffering from a faulty CMOS battery, it is better to clear or replace the battery quickly. For doing so,

  1. Firstly, shut down your computer and make sure it is plugged out from the power socket from every source.
  2. Now remove the side cover and take a look at the motherboard to find out the CMOS battery. Here you can equip your hand with a static wrist band so that you do not harm any components of your computer.
  3. The CMOS battery looks like a wristwatch battery, so you can quickly locate it within a few seconds.
  4. Once you find the CMOS battery, use a non-conductive screwdriver to remove it from its slot safely.
  5. Now clean it thoroughly and ensure no dust particles are left behind. Make sure you use a soft cloth. In case if you are dealing with a faulty battery, it is better to replace it with a fresh one.
  6. Please wait for a couple of minutes and then place it back on the motherboard securely. Also, put all the side cover back.
  7. Finally, restart your system (two times) and check whether the error persists.

However, the CMOS battery helps the computer to keep the necessary information like date & time in tacked. This may fix the error entirely now. If not, move towards the next step.

Solution 3- Update the BIOS


If your CMOS battery is perfectly healthy, your current BIOS version may be causing the error issue. Here in such a case, you can try updating the BIOS to a new version (if available).

NOTE: Keep in mind updating your BIOS may differ depending on the motherboard you are using. Manufacturers have different properties software that requires while updating BIOS. We have explained some basics about how you can update your BIOS.

For Laptop users: First, you require to login to the official website of your laptop manufacturer. A manufacturer list will show you BIOS updates in the download center.

For desktop users: You have to visit the official website of your motherboard manufacturer and check the BIOS updates.

However, the best way we recommend is by contacting a professional IT technician, so you do not risk your system in any way.

Solution 4- Replace your PSU

If restoring the overclocked frequencies confirm that the “Hyper transport sync flood error” does not occur anymore, it is inevitable that your PSU is under-powered. An underpowered PSU may not supply enough power to the PSU, and it won’t compensate for extra frequency during overclocking.

An underpowered PSU will keep occurring the “Hyper transport sync flood error.” If you are not looking to upgrade to a better PSU, you should remove all the external devices that are unimportant to your system. It may include optical drivers, additional HDDs, etc. Another option you can try is bringing down the voltage slightly if you have an overclocked GPU or CPU. After using each of these methods, see if the sync flood error issue still occurs.

If yes, you have now no choice but to upgrade to a more powerful PSU.

All that said, these were the leading causes and fixes for the “Hyper transport sync flood error.” If you can figure out the reasons for the error occurrence, it better to quickly use the applicable fix and get rid of the error.

However, as we now know that few of the above fixes require professional guidance. So, we recommend you to take professional help if you can use so that you can avoid any unwanted error to your system. If you have any queries or feedback, please write down the comment in the below comment box.

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