B450M Pro 4 & Nvme issue after new CPU install

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   Hey everyone,

I just signed up about this issue so I'm new here.

Background: Recently I decided to build a secondary rig that I was either going to use to start a flipping side business, or just keep it in my garage. In said rig I have put an ASRock B450M Pro 4, Ryzen 3 1200 and a GTX 1650. I had a 2TB Crucial P2 nvme Gen 3 in M.2 slot one that I took from my main rig, as well as a 240GB Kingston SATA SSD in M.2 (windows was already installed on here and thus opted to have it as my boot drive). These were all working fine together with no issue. However, the CPU just wasn't cutting it and was slowing even the 1650 down (was near enough pegged at 100% cpu usage in most games), which is a pretty low end 1080p in 2024. So, I got a good deal on a 5600x - I know a big gulf between the CPU and GPU but at least it gives me a good upgrade path for the future.

Anyway, I installed the CPU after updating the BIOS to the latest version and it came up with the usual 'New CPU installed' message after a successful post and I entered the BIOS. Went into windows and all good - however I noticed the nvme drive was no longer showing in file explorer or disk management. So I went into my BIOS and sure enough it is no longer showing there either. I've seen a few people have a similar issue, one person specifically with this motherboard about 3 years ago but couldn't find a solution and ended up RMAing and getting one from a different manufacturer which fixed the issue.

I've tried the following:
- removing CMOS battery for a few minutes
- removing the Kingston SATA M.2 drive
- Making some adjustments to the CPU settings in BIOS
- Enabling CSM compatibility in BIOS

The nvme drive also has the latest firmware.

Could it be a bandwidth issue between the 5600X and the nvme drive?

Specs:

B450M Pro 4
Ryzen 5 5600x
GTX 1650
Corsair TX850

I would appreciate any help, thanks!

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Reckoner87 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 hours 3 minutes ago Location: UK Status: Offline Points: 20	Post Options Post Reply Quote Reckoner87 Report Post Thanks(0) Quote Reply Topic: B450M Pro 4 & Nvme issue after new CPU install Posted: 10 hours 60 minutes ago at 5:34pm
	Hey everyone, I just signed up about this issue so I'm new here. Background: Recently I decided to build a secondary rig that I was either going to use to start a flipping side business, or just keep it in my garage. In said rig I have put an ASRock B450M Pro 4, Ryzen 3 1200 and a GTX 1650. I had a 2TB Crucial P2 nvme Gen 3 in M.2 slot one that I took from my main rig, as well as a 240GB Kingston SATA SSD in M.2 (windows was already installed on here and thus opted to have it as my boot drive). These were all working fine together with no issue. However, the CPU just wasn't cutting it and was slowing even the 1650 down (was near enough pegged at 100% cpu usage in most games), which is a pretty low end 1080p in 2024. So, I got a good deal on a 5600x - I know a big gulf between the CPU and GPU but at least it gives me a good upgrade path for the future. Anyway, I installed the CPU after updating the BIOS to the latest version and it came up with the usual 'New CPU installed' message after a successful post and I entered the BIOS. Went into windows and all good - however I noticed the nvme drive was no longer showing in file explorer or disk management. So I went into my BIOS and sure enough it is no longer showing there either. I've seen a few people have a similar issue, one person specifically with this motherboard about 3 years ago but couldn't find a solution and ended up RMAing and getting one from a different manufacturer which fixed the issue. I've tried the following: - removing CMOS battery for a few minutes - removing the Kingston SATA M.2 drive - Making some adjustments to the CPU settings in BIOS - Enabling CSM compatibility in BIOS The nvme drive also has the latest firmware. Could it be a bandwidth issue between the 5600X and the nvme drive? Specs: B450M Pro 4 Ryzen 5 5600x GTX 1650 Corsair TX850 I would appreciate any help, thanks!