Question MSI B550M MORTAR WIFI USB BIOS Flash not working

Aug 7, 2022
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I purchased a MSI b550m MAG mortar wifi, and tried to use a USB to flash the bios, now it wont post..

I followed the instructions from MSI and got the latest bios file and renamed it MSI.ROM, i plugged in the usb to the one with the white box and pressed the flash button. it went through the process and when it stopped blinking i waited five mins and powered off the psu and unplugged the usb.. turned it back on and nothing happened.. wont even post now. what am i doing wrong? lol

specs are:
Ryzen 5 5600x
b550 mortar wifi
Samsung 980 1tb nvme m.2
corsair ddr4 3600mhz x2 16gb
rtx 3060 ti

Any help is greatly appreciated!
 
Aug 7, 2022
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Welcome to the forums, newcomer!

Try clearing your motherboard's CMOS. You forgot to mention the make and model of your PSU.
Sorry i should have done an introduction when i signed up, was busy stressing over this and i forgot. my psu is a Corsair CX750F RGB.
this might be a rookie question lol but how would i clear the CMOS? Remove the battery?
 

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