Question Broken bios flashback button

[shubham1122]

Hello everyone,
I am using asus tuf gaming b550m-e motherboard.
While installing motherboard in cabinet i accidentally broke my bios flashback button.
The whole button( button and its holding) is bend towards inside and its button came out of its holding. But its holding is still attached with motherboard.
The button is not touching motherboard or its holding,but i am not sure that whether bios flashback button is pressed or not as may be when it was bend then their inner connection may get permanently touched.
I am little afraid about this issue and wondering whether it will damage my board in long run.
Is their is any way to find out whether inner connection are touched or not.

 

[shubham1122]

Hello everyone,
I am using asus tuf gaming b550m-e motherboard.
While installing motherboard in cabinet i accidentally broke my bios flashback button.
The whole button( button and its holding) is bend towards inside and its button came out of its holding. But its holding is still attached with motherboard.
The button is not touching motherboard or its holding,but i am not sure that whether bios flashback button is pressed or not as may be when it was bend then their inner connection may get permanently touched.
I am little afraid about this issue and wondering whether it will damage my board in long run.
Is their is any way to find out whether inner connection are touched or not.

I did not find any way to attach images.

 

[Misgar]

It all depends whether or not the BIOS flash back push button witch is a surface mount component, or one with old fashioned metal pins that fit in holes that go all the way through the motherboard.

If it's the former, you're unlikely to find any exposed metal contacts or tracks for the probes of a multimeter set to the Ohms (continuity) range.

If it's the latter, when you've removed the board from the case, turn it over and measure the resistance between the switch pins.

If the resistance is 0 (zero) Ohms, the switch contacts are "made" i.e. touching. I would not advise using the board in this condition because it will be in flash back mode.

If the resistance is greater than several tens of Ohms, the switch are contacts are not touching and it should be OK to use the mobo.

If none of the above makes sense, take the board to a repair shop. They might even be able to replace the broken switch without further damaging the board. Ham fisted attempts to unsolder the switch could make things worse.

 

[shubham1122]

It all depends whether or not the BIOS flash back push button witch is a surface mount component, or one with old fashioned metal pins that fit in holes that go all the way through the motherboard.

If it's the former, you're unlikely to find any exposed metal contacts or tracks for the probes of a multimeter set to the Ohms (continuity) range.

If it's the latter, when you've removed the board from the case, turn it over and measure the resistance between the switch pins.

If the resistance is 0 (zero) Ohms, the switch contacts are "made" i.e. touching. I would not advise using the board in this condition because it will be in flash back mode.

If the resistance is greater than several tens of Ohms, the switch are contacts are not touching and it should be OK to use the mobo.

If none of the above makes sense, take the board to a repair shop. They might even be able to replace the broken switch without further damaging the board. Ham fisted attempts to unsolder the switch could make things worse.

I will show you pictures of it but i am not able to find that how to attach images while posting. The photo is in my phone but it is asking some url. Although my motherboard is asus tuf gaming b550m-e . Can you please check it on asus site and let me know which type of switch is it and is there any problem. I just checked my switch and it has 2 pins which are passing through the motherboard and are visible on back of motherboard. Although when i switch on power to psu (not opening pc) no bios lights is flashing.

 

[shubham1122]

It all depends whether or not the BIOS flash back push button witch is a surface mount component, or one with old fashioned metal pins that fit in holes that go all the way through the motherboard.

If it's the former, you're unlikely to find any exposed metal contacts or tracks for the probes of a multimeter set to the Ohms (continuity) range.

If it's the latter, when you've removed the board from the case, turn it over and measure the resistance between the switch pins.

If the resistance is 0 (zero) Ohms, the switch contacts are "made" i.e. touching. I would not advise using the board in this condition because it will be in flash back mode.

If the resistance is greater than several tens of Ohms, the switch are contacts are not touching and it should be OK to use the mobo.

If none of the above makes sense, take the board to a repair shop. They might even be able to replace the broken switch without further damaging the board. Ham fisted attempts to unsolder the switch could make things worse.

Hello sir,
I want to know that if the contact is made from inside then when i power on to psu (not opening pc power button) then should bios flashback light start blinking. As in my case it is not blinking so can i assume that their is no contact or light will blink only when i insert pendrive in bios port having bios update file.
I request you to please help me on this issue

 

[shubham1122]

It all depends whether or not the BIOS flash back push button witch is a surface mount component, or one with old fashioned metal pins that fit in holes that go all the way through the motherboard.

If it's the former, you're unlikely to find any exposed metal contacts or tracks for the probes of a multimeter set to the Ohms (continuity) range.

If it's the latter, when you've removed the board from the case, turn it over and measure the resistance between the switch pins.

If the resistance is 0 (zero) Ohms, the switch contacts are "made" i.e. touching. I would not advise using the board in this condition because it will be in flash back mode.

If the resistance is greater than several tens of Ohms, the switch are contacts are not touching and it should be OK to use the mobo.

If none of the above makes sense, take the board to a repair shop. They might even be able to replace the broken switch without further damaging the board. Ham fisted attempts to unsolder the switch could make things worse.

I have a 1 last query and request you to please reply.
I want to know that if the contact is made from inside then when i power on to psu (not opening pc power button) then should bios flashback light start blinking. As in my case it is not blinking so can i assume that their is no contact or light will blink only when i insert pendrive in bios port having bios update file.

 

[Misgar]

If the BIOS flash back LED is not blinking when you have a compatible CPU installed, it's a good sign the push button switch contacts are not connected to each other. In other words, it's safe to use the board normally.

I stress the fact you should start the board with a compatible CPU and cooler already installed. If you don't have a working CPU, I have no idea if the BIOS light will flash or stay dark.

You can probably ignore the broken flash back button from now on. You can use the reflash option in the BIOS, if you ever need to update the BIOS at some time in the future.

This of course assumes you have a working CPU already installed in the motherboard and the computer boots as far as the BIOS screen.

If you don't have a compatible CPU and you cannot see the BIOS screen on a monitor, then you need to get the switch replaced.

One option might be to carefully remove the plastic body from the broken switch, to expose the two metal contacts inside. You could then solder wires to the exposed contacts and terminate them in a 'momentary action' push button switch.

This would save unsoldering the broken switch from the motherboard, with the attendant risk of damaging the printed circuit board. Leave this task to a professional electronics engineer or technician. Do not attempt it yourself.

It is my understanding you only really need to use a BIOS flash back button, when you don't have a working CPU installed. I haven't checked your motherboard manual to see if this is true, so I'm not 100% sure of this fact.

Good luck and next time be more careful.

 

[shubham1122]

If the BIOS flash back LED is not blinking when you have a compatible CPU installed, it's a good sign the push button switch contacts are not connected to each other. In other words, it's safe to use the board normally.

I stress the fact you should start the board with a compatible CPU and cooler already installed. If you don't have a working CPU, I have no idea if the BIOS light will flash or stay dark.

You can probably ignore the broken flash back button from now on. You can use the reflash option in the BIOS, if you ever need to update the BIOS at some time in the future.

This of course assumes you have a working CPU already installed in the motherboard and the computer boots as far as the BIOS screen.

If you don't have a compatible CPU and you cannot see the BIOS screen on a monitor, then you need to get the switch replaced.

One option might be to carefully remove the plastic body from the broken switch, to expose the two metal contacts inside. You could then solder wires to the exposed contacts and terminate them in a 'momentary action' push button switch.

This would save unsoldering the broken switch from the motherboard, with the attendant risk of damaging the printed circuit board. Leave this task to a professional electronics engineer or technician. Do not attempt it yourself.

It is my understanding you only really need to use a BIOS flash back button, when you don't have a working CPU installed. I haven't checked your motherboard manual to see if this is true, so I'm not 100% sure of this fact.

Good luck and next time be more careful.

First of all thanks for such a detailed reply.
I am using ryzen 5 5600 g in this motherboard since a month and their is no problem in using pc,although the button is broken from beginning itself i.e, since 1 month. Not a single time bios flashback light flashed in last 1 month, i have tried it by first powering the psu but not opening pc.
The only issue i am facing is that sometime screen which shows option to press f2 or del to enter bios appears but sometimes it directly showing loading screen after opening pc so i thought it might be because of that button issue. I also disabled fast startup but the same is happening.
So as per your opinion as i have a working cpu installed and my pc working fine and flashback light not flashed even a single time means the switch contacts are not connected and i can continue to use my pc without any worries..

 

[Misgar]

The press F2 or Del prompt often appears for a few seconds as a reminder of how to enter the BIOS. By the time you see this message, it's usually too late to open the BIOS, because the computer is busy loading the Operating System (e.g. Windows).

Just remember if you overclock your RAM using XMP, it's a good idea to boot the computer from a USB memory stick programmed with MemTest86+.

Run this program for a couple of hours, to confirm your RAM is stable. Even one error in MemTest means you might be running your memory too fast, or it could indicate a faulty DIMM.