UPDATE 11/27/2022: Thanks to the gracious HARDOCP member "learners permit" who sent me a known good 3600X. I installed the 3600X on 11/17 and I have had zero errors or problems. The problem was a bad AMD 3600 CPU.
--------Original Post Below---------
I recently had the same problem with a B450 board, after running it with no problems for 2.5 years. I bought the same board, upgraded to the B550, and no less than 2 months in, same problem.
B450I Aorus Pro ITX
B550I Aorus Pro AX
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I first noticed something was not right about 3 weeks ago when I pushed the power button and the RGB lights quickly flashed (I have the option for all lighting to be off on start). Then about a week later I was saving the BIOS changes, and it failed to recycle and post (shut off and restart post and boot). Then, about week after that, I got the dreaded no post no video deal. Unplugged it, bleed off any power, and it posted and booted.
PROBLEM: No Post no Video. Intermittent or no post into BIOS. No Beep codes when speaker is attached to beep header, even with RAM out. After final testing, I could not get it to post at all.
-- Used different monitors and cables (HDMI and DP)
--Swapped RAM and use Different RAM, one stick then 2 sticks
--Breadboraded MB with no attachments
--Use 2 different video cards, one AMD and one nVida
--Reset BIOS
--Reseated CPU
--Reseated all power connections
RESULT: Booted to windows after BIOS reset a couple of times. After restarting again, no boot, no video. Booted a couple of times into BIOS, but failed to post on restart from BIOS with no video. Last try: No post after resetting bios again with multiple cycles and power offs, no video, no error beeps on installed speaker.
--------Original Post Below---------
I recently had the same problem with a B450 board, after running it with no problems for 2.5 years. I bought the same board, upgraded to the B550, and no less than 2 months in, same problem.
B450I Aorus Pro ITX
B550I Aorus Pro AX
-------
I first noticed something was not right about 3 weeks ago when I pushed the power button and the RGB lights quickly flashed (I have the option for all lighting to be off on start). Then about a week later I was saving the BIOS changes, and it failed to recycle and post (shut off and restart post and boot). Then, about week after that, I got the dreaded no post no video deal. Unplugged it, bleed off any power, and it posted and booted.
PROBLEM: No Post no Video. Intermittent or no post into BIOS. No Beep codes when speaker is attached to beep header, even with RAM out. After final testing, I could not get it to post at all.
-- Used different monitors and cables (HDMI and DP)
--Swapped RAM and use Different RAM, one stick then 2 sticks
--Breadboraded MB with no attachments
--Use 2 different video cards, one AMD and one nVida
--Reset BIOS
--Reseated CPU
--Reseated all power connections
RESULT: Booted to windows after BIOS reset a couple of times. After restarting again, no boot, no video. Booted a couple of times into BIOS, but failed to post on restart from BIOS with no video. Last try: No post after resetting bios again with multiple cycles and power offs, no video, no error beeps on installed speaker.
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