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Question MSI MAG b550m Mortar (with WiFi) motherboard not showing display after bios flash

Feb 19, 2023
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Hello. I went on a trip over the weekend and shut my computer off. It was working perfectly, but when I got back, I tried to boot it and the EZ Debug “CPU” led was lit. After checking the CPU, the CMOS battery (replacing it, even), etc, I decided to flash the bios. Once I did, the light went off and it appeared to post. Success!… I thought. I waited and waited but I received no output to my monitor at all. The EZ Debug led’s were all off as well. I checked my display cable, I checked my monitor, I checked the power cables, I checked all my input cables on the board and the PSU, I tried single-channel ram, I tried the on-board HDMI port (even though I have no integrated graphics), i reset the bios, i feel like I’ve tried it all. I eventually re-flashed the bios again to no avail. Did i miss a step?
 
I have
  • MSI AMD Radeon 5700XT graphics card
  • AMD Ryzen 9 3900X processor
  • G-Skill Ripjaws 32g (dual channel)
  • DualScythe cpu cooler
  • 2 NVME drives
  • 2 HDDs
  • Corsair RM750 PSU