WHEA PCI/PCIE Bus Errors, what are they and should I be worried?

[mancesco]

I have a Dell XPS 15 9560 and recently I noticed that HWiNFO is showing a number of WHEA PCI/PCIE Bus Errors. This never resulted in a BSOD, and I only noticed it by glancing at HWiNFO.

 

I tried running a few benchmarks and games after a reboot to see if they'd show up under stress, but nothing happened. So far I haven't been able to pinpoint what might trigger the error and for all I know it might be random.

My CPU is undervolted (-120mV on Core and Cache, -80mV on iGPU), I don't know if this is a factor to consider but I've had it like this for years and never had a problem. My system is up to date with drivers, except for the BIOS which I keep on an older version as the newer ones disabled undervolting (without it this laptop runs really hot, especially in the summer).

 

How serious is it and what can I do about it?

 

Specs:

Dell XPS 15 9560

i7-7700HQ

16GB RAM DDR4

GTX 1050 4GB

512 GB SSD

Bios v1.18

Windows 10 Home 64bit (20H2)

 

 

 

 

[Mark Kaine]

3 hours ago, mancesco said:

My system is up to date with drivers, except for the BIOS which I keep on an older version as the newer ones disabled undervolting (without it this laptop runs really hot, especially in the summer).

 

How serious is it and what can I do about it?

 

Specs:

Dell XPS 15 9560

i7-7700HQ

16GB RAM DDR4

GTX 1050 4GB

512 GB SSD

Bios v1.18

Windows 10 Home 64bit (20H2)

As long u arent crashing it should be a none issue.

i had this for over 3 years, latest BIOS update fixed it. Ironically.

 

You can check the vendor id of the error, if it points to Nvidia its likely exactly what i had too… but even if its not, it should not be a big issue at all, unless you notice something like slowness, sluggishness, bsods, etc…

[mancesco]

No, performance and stability haven't been affected as far as I can tell. I was worried this might be tell-tale sign of something serious.

[seresusly]

I'm getting the exact same thing on my XPS 15 9560. I have some issues with the dGPU being unusable sometimes, needing a restart. Other than that, I don't know what else it's messing up.