MSI Global English Forum (2024)

I recently download the latest BIOS update for my MSI B450 Gaming Plus Max motherboard. I copied the files to a USB with fat32 format, opened up the BIOS and started updating.

At first it seemed to be doing well, progressing slowly. Then the display went to standby and I didn’t check it for over an hour. Now when I turn on the display it shows “no signal” like it isn’t connected, and I can’t see how far the update has progressed.

The PC is definitely still on, but I have no way of knowing if it’s still updating or if something is wrong. Does anyone have know what’s up and if I should be worried?

I can’t access my PC right now, and I don’t have all components committed to memory but I’ll do my best

MSI B450 Gaming Plus Max motherboard
AMD Ryzen 5 3600 6 core CPU
Gigabyte GeForce GTX 1660 GPU
Corsair Vengeance LPX DDR4 16 GB Ram
Corsair TX 650M PSU
Crucial P1 M.2 2280 NVMe 1Tb ssd

I've tried flashing the BIOS via the USB port on the motherboard and the "Flash BIOS" button. The LED starts flashing red for a few minutes - stops flashing and turns the PC off - Restarts it automatically and the LED is either glowing red or not glowing at all. After this process there is still no signal to monitors, keyboard or mouse. It's not booting at all. The motherboard's CPU LED is glowing red, but it's actually been doing this for a long while and there has been no issue. I checked and there were no bent/broken pins and no dist/dirt in the CPU.

I have tried with different USB drives. Tried with an older BIOS update file instead of the newest one (didn't work). I've tried removing the CMOS battery for a few minutes and then put it back in. I've tried resetting CMOS via "shorting CMOS jumper" according to the user manual instructions.

Ok. Hmm, the Corsair TX650M, is this perhaps the original model from circa 12 years ago? Then i would try with a different PSU first, and i would use no PSU of that age anymore. The technology is outdated and the capacitors have aged too much, losing their electrical properties. See my Guide: How to find a good PSU. The only TX650M you can keep using are the 2017/2021 versions with black&white label, but the ones with orange color on the label are too old.

Now, this doesn't explain why it happened after a BIOS update and never before, but it would go back to what i posted here the other day (if your PSU really is that old model). In that case, i would connect a different PSU (known good, not too old - preferably still within its warranty period - and of decent quality), and then try the Flash BIOS Button method again, see if that changes anything.

Well, the BIOS can corrupt in rare cases, however, that's one of the things the Flash BIOS Button is for. This will blindly flash the BIOS, whatever is going on with it.

If the PSU is the newer one with the black&white label, then that PSU theory is less likely, yes. It should still be good. I would try other BIOS versions, for example with 7B86vHG, using the Flash BIOS Button. There has to be a way to get this working again.

I'd try the 7B86vHG BIOS, just because that is an older known good version.

When you first updated the BIOS, you said it progressed slowly. How slow are we talking? I mean, if the display enters standby, it must've been at least ten minutes? Even that would already be long for a simple BIOS update.

Worst comes to worst, there is still this kind of method with an external flash programmer (bit more info here), with which you flash the newest BIOS version directly onto the BIOS chip. Maybe your local PC repair shop offers something like that. That's if we assume that the BIOS is still corrupt and cannot be flashed with onboard means anymore. I don't know what's going on with these older AM4 boards sometimes.