The same motherboard “killed” three Ryzen 7 chips in a row. Users said ASRock B850M has become a “serial killer”

[ Gearbest Technology News]Recently, a user shared his shocking experience: in just a few months, one of his ASRock 800 series motherboards caused the “death” of three AMD Ryzen 7 9800X3D processors in succession. This is not an isolated CPU failure, but the same motherboard repeatedly “killing U”, causing serious concerns about the quality of ASRock's early batch of 800 series motherboards.

According to Gearbest, the username is u/notmember. He posted on the ASRock subreddit that he assembled a new computer in January 2025. The motherboard is ASRock B850M PRO RS WiFi and the CPU is Ryzen 7 9800X3D. The first failure occurred in November 2025. The processor completely failed and the CPU and DRAM indicators on the motherboard turned on. He applied for an RMA (Return Merchandise Authorization) from AMD and received a second CPU of the same model.

However, just two months later, the second 9800X3D died again. The fault behavior was exactly the same as the previous one – the CPU and DRAM lights were always on. The user applied for RMA for the second time and got a third CPU. This time the situation was even worse: the third CPU only survived for a month, and new symptoms appeared – the BOOT green light on the motherboard was always on, but there was no display output at all.

The user concluded: “My motherboard is not only a serial CPU killer, but it kills faster and faster each time.” He confirmed that he has been updating the BIOS: the first CPU died in BIOS version 3.50, the second died in BIOS 4.03, and the third died in BIOS 4.07 beta. It is worth noting that the AGESA 1.3.0.0a microcode pushed by ASRock was released together with the 4.07 beta version. It was supposed to fix the CPU failure problem, but it failed to prevent the third tragedy.

At present, the user has decided to give up this motherboard and purchased a new motherboard by himself. He also asked in the post: “What should I do with this killer board? If I apply to ASRock for an RMA of a functioning board, will they refund the money? Has anyone ever received a refund from ASRock?”

This case implies that early batches of ASRock 800 series motherboards do have serious hidden dangers. There have been many reports of CPU deaths twice on the same motherboard before, but this is the first time that it has died three times in a row. It is recommended that users who are still using ASRock 800 series motherboards upgrade their BIOS to the latest 4.10 version as soon as possible to further reduce the risk of CPU failure.