@RobinLindleyUK 

If the PCI Tests DW-0 Driver Error only started appearing immediately after the SupportAssist 5.2 update and your system was previously passing all diagnostics, it is possible that the issue is related to SupportAssist itself rather than an actual hardware failure.

A few questions:
What is your exact Dell model?
Does Device Manager show any devices with a yellow warning icon?
Are there any actual symptoms like crashes, BSODs, missing devices, network issues, etc., or is the system operating normally apart from the SupportAssist warning?

As a precaution, I would recommend:
Running the built-in Dell pre-boot diagnostics (F12 → Diagnostics).
Checking Device Manager for any driver errors.
Installing any available BIOS, chipset, and driver updates.
Re-running SupportAssist after a reboot.

If the Dell diagnostics pass and Device Manager shows no hardware issues, there is a reasonable chance that this is a SupportAssist 5.2 detection issue rather than a genuine PCI hardware failure. There have also been recent community reports of unexpected behavior and bugs after SupportAssist updates, so additional feedback from other users may help determine whether this is a wider 5.2 issue.

Please post the full error text or a screenshot of the SupportAssist result page if possible, as that will help identify which PCI device is being flagged.

@Sharan G​ Latitude E5570. No problems. Device manager clear. All updates up to date via Dell direct and linked to this laptop.  I'll try the F12 check.  Thank you for your quick response.

Hi RobinLindleyUK:

See Jackrandom's 23-Aug-2026 topic I have a problem about a similar DW-0 "analytical notation" for their PCI bus.

NOTE: Most discussions about SupportAssist are posted in the SupportAssist for PCs board of this forum.

Also see my 27-Aug-2026 reply in RomoSouthAm's New SupportAssist 5.2 Version - Asking and Failing to Update OS Recovery Plug-in about the major design changes in SupportAssist v5.2.0 (rel. 20-Aug-2026), including AI integration, changes to notifications and alerts, and a new requirement for Microsoft .NET Desktop Runtime 10.0.x.
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Dell Inspiron 15 5584 * 64-bit Win 10 Pro v22H2 build 19045.7663 * Firefox v154.0.1 * Microsoft Defender v4.18.26070.9-1.1.26070.7 * Malwarebytes Premium v5.6.5.306-163.0.5714 * Macrium Reflect Free v8.0.7783 * My Dell v2.2.6.0

Went to 'I have a problem'. It was indeed exactly the same as mine. Did an F12 test yesterday, but I didn't go on to the advanced one, and it was all clear. Ran support assist this morning and the same 'error' appears.  I presume it's just a glich in SA new update, but very annoying.

SSD card not up to date or missing?    I'm on a Latitude E5570 Windows 10. Been running fine for years. No updates via Support Assist/Windows/Microsoft for that and last one available on Dell is from 2020?  Are you sure this isn't just a glich from the SA update I got yesterday?

@RobinLindleyUK​ I would think its likely a bug as well simply because its an older model. the SA app may be looking for something that wouldn't be present in the older model. If you have no issues so far, and the diagnostic is passing, then I would agree with lmacri that it should be safe to ignore. Our engineering teams may need to do a bit more validation if this issue is not already on their radar.