DMA Protection - 450 G9

[NicoBan]

Hello everyone.
It seems like it might be fixed by running those: Sfc/scannow
                                                                                          DISM /Online /Cleanup-Image /RestoreHealth

In the command prompt.

[RockCrawler]

Pure anecdote here. Have been experiencing the same issue on my G9. Last Friday was on a Teams call while also connected to a client's RDC. The RDC kept dropping every few minutes, but not the Teams call. Reached out to client's IT guy, and he said if internet connection is down for even a split second, it'll break the RDC. 

So disabled wi-fi and have been hardwired into the router since Sunday afternoon. Laptop has been on and running 24/7 since and so far no BSODs. Prior to that, was getting a BSOD at least once per day for a couple of weeks. Knock on wood, fingers crossed the fix holds. If it remains error free for a few more days, I may try to swap out the wireless LAN module.  

[NicoBan]

Hello!
No need to swap the LAN module.
Rolling back the Realtek Wi-Fi module driver to version 6001.15.152.0 or older fixes the issue.

[RockCrawler]

Thanks! I'll give that a try.

[Unknown_404]

Hello,

I work in a company in wich we have more than about 13 HP 450 G9 with the DMA issue and 30+ of 450 G10 with the same error. We tried to diable the DMA Protection in BIOS but with no luck. Also, the laptops are fully updated and we tried to reset driver verifier, we tried to roll back the USB controller drivers but with no luck.

Has anyone found any workaround or solution for this issue?

Thanks

[NicoBan]

Hello, so as I mentioned in my previous post, we had issues with Realtek RTL8852BE driver.
But we had issues with 450 g9, no g10 were affected so far.
So, rolling back the driver to 6001.15.152.0 or earlier fixed the issue.

If your company has Intune, try remediation script.

[Run_DMA]

I haven't had any users come back to me with issues after installing the HP BIOS and System Firmware (U72/U85) update

https://support.hp.com/hr-en/drivers/hp-probook-450-15.6-inch-g9-notebook-pc/model/2101000516?sku=8F...