Issue with FTMP on AMD CPU detected.
Issue with FTMP on AMD CPU detected.
This situation turned out complicated. Earlier today, I assembled a PC with my friend, but the QFLASH on the motherboard failed. Without updating the BIOS, the CPU (R5 5500) wouldn't function properly with the board. To try a fix, we replaced the CPU with an AMD Ryzen 5 3600x that worked without a flash update. We entered the BIOS but couldn't complete the update, so we're replacing the motherboard instead.
The issue arose when booting on the new board with the 3600x: the American Megatrend screen appeared with a warning about fTPM corruption or changes. Pressing Y reset the fTPM, but if BitLocker or encryption was active, the system wouldn't boot without a recovery key. Pressing N kept the previous fTPM intact and allowed the system to boot, though the fTPM feature wouldn't work on the new CPU.
When I tried to restore it to the original setup, the PC wouldn't power on at all—only the GPU fans were active. I verified everything: connectors were present, pins weren't bent, power supply was functional, CMOS cleared, GPU swapped in successfully, and fans still didn't spin except the GPU ones. There was no post detected.
My guess is that the fTPM reset might have locked the system, preventing boot. Since I'm unsure how to unlock it (it seems stored on the CPU), any guidance would be greatly appreciated.
System specs: R5 3600x, GTX 590, 16GB DDR4, TUF B450, Crucial 2To CT2000MX500SSD1, 500W power supply.
It’s helpful you shared all the details, but without knowing the parts involved it doesn’t help much. Also, linking unrelated components won’t work. Using a new CPU on a system with TPM enabled requires clearing CMOS first. The problems you mentioned aren’t connected to fTPM, and it won’t stop a computer from posting.
It's nice to hear that, actually—I'm not very familiar with the details. I just updated the post with the specifications you mentioned.
You explored several graphics cards. GTX590 is suitable because it lacks UEFI-GOP in its VBIOS, which may prevent detection. Your motherboard could have DEBUG LEDs similar to your B450 Aorus M—check its status lights.
I used a RX 6650XT but got the wrong motherboard model—it was a TUF gaming B450 Plus, and it doesn’t show a debug LED.
BIOS checks for hardware modifications. If it finds changes in RAM or CPU arrangement, it either resets CMOS or reprograms the memory. This is similar to what happens when overclocking fails and the CMOS clear jumper near your graphics card is affected.
I wasn't aware of that, but I tried overclocking a few days ago without success. My cooling fan is also inside the graphics card, so I had to take it out. Good to know next time I just need to remove a RAM stick! Overall, thanks a lot—I wouldn’t have felt so guilty if I had messed up my friend’s system while trying to help.