BSOD STOP D1 - pci.sys

wither 2

"It is a Windows driver installed and updated by Windows. That was noted in your thread in the other forum."
Yes, I THOUGHT that that's what system driver meant, but I had to clarify for specificity's sake.

Yes, 23.21.13.9135- IS the driver I have installed.
Refer Attachment "$20210124-jan~Graphics_Driver_Dtls.jpg".
If I DO have the driver installed for Win10, that would explain a lot.
However, I thought Install pkgs checked for compatability, O/S, etc?
From where are you picking up on mine being for Win10?
I have checked the .TXT files and some of the .INF files & cannot find a reference to Win10, only "Windows NT".

I downloaded the new driver again, from where I usually do, & will dutifully install it (after removing current), but everything I see in Device Mgr points to all being OK; no yellow "!" marks, etc.
Also, the graphics card is recognised accurately & is listed as the correct card.
For new driver details, SEE "$20210124-jan~Nvidia_Drvr_Dwnld-v391.35-#01.jpg"
& "$20210124-jan~Nvidia_Drvr_Dwnld-v391.35-#02.jpg"

Doing a Compare of the 2 pkgs with Beyond Compare ($20210124-jan~Nvidia_Drvr_COMPARE-Old_vs_New.jpg) shows all the same details.
The file sizes are exactly the same, only the file dates are different.
The file name really says it all, unless Nvidia have made a HUGE stuffup, which has gone unnoticed for 2 YEARS.

I will let you know how the install goes, and the after effects, if any.

- URL = Download Drivers | NVIDIA


Now what exactly will be the effect of NO H/W acceleration?
It seems to me that, for playing games, this is exactly what a graphics card is for, apart from displaying the game in the 1st place, if it doesn't do that then the power of the card is rendered impotent; a 1080T Ti will perform no better than a 560 Ti.

Is that not the case?
Also, I suppose, is it better to have H/W acceleration & old drivers or the latest driver & no H/W acceleration?

I went to the USA URL you mentioned & the details are VERY different compared with the UK site.
The RELEASE HIGHLIGHTS & the ADDITIONAL INFORMATION show completely different information to the same tabs on the UK site.
Also, the 560 is not mentioned at all. All the cards seem to be Notebook-based.

ALL the details above the tabs are exactly the same; Version, Release Date,
Operating System and File Size.
The only detail that is different is the Language: English (UK), instead of
English (US).
This is the main reason I use the UK sites, in all my S/W, if I can.

Trust Softpedia to get it wrong.
I have never liked nor trusted Softpedia, myself.
The Win10 discrepancy seems like it is not an Nvidia issue, but a Softpedia issue.

What would be the effect of lack of H/W acceleration?
I imagine it would be a drop in performance, but would it be a minor drop or a major drop? Any personal thoughts or observations?

The only reason I have not replaced the card is:"if it ain't broke, don't fix it".
So far I have had no issue with the card playing any game I have tried, at the highest, or close to highest settings.
Having said that, I have pretty much given up on buying new games, as the last 3 I bought, I've only been able to run 1 (Far Cry 4), and that was severely limited by a release-day Bug of epic proportions, making it unplayable in some instances.
The other 2 I haven't been able to get running due to "game management" S/W bugs, which have completely stopped me from running them at all. I hate "game management" S/W; it adds nothing of value to the game for ME and blocks me from playing them.
I had a lot of the same problems with Uplay when it first came out & was required.
So far, the games companies Support have been less than interested, so I gave up on contacting, due to far more important PC considerations.

Any particular reason you use the 327.23 over the 337.88?
Is it just because you haven't given the 337.88 a try yet?

The driver sizes for the UK vs US are the same, but that may not necessarily mean
much.
It does SUGGEST however, that the packages are the same.
All the accompanying info in the 3 tabs is VERY different though, misleading different.
THIS is an Nvidia issue. They should at least be consistent.

As I said previously, "If I DO have the driver installed for Win10, that would explain a lot", but it would now seem that this is definitely not the case, so where can we go from here?
Even thought the H/W was DESIGNED for Win10, surely it is backward-compatible, if there is a suitable Win7 driver for the H/W?
From a programming point of view, I do not really see why Win7 itself should be causing this problem, just because it is on new H/W.

Does anyone know what pci.sys actually DOES?
Torchwood said previously, "PCI these are SYSTEM drivers that allocate resources to any PNP device. so check your Bus controllers."
I ask again, check them for WHAT exactly?
There are no issues listed anywhere in Device Manager, except for a Network Controller, which I believe is the on-mobo Wi-Fi controller, for which there are only Win10 drivers available.
It was not Disabled, just dormant, w/O drivers, so I now have Disabled it, in the hope that this will do some good.

Also, I ran the Win7 System Update Readiness Tool (KB947821) yesterday.
It seemed to run successfully and no error messages were produced.
I could not find a Report of any kind, in the more obvious places.
Is it supposed to create a report? Or only if it finds a problem?


BTW, I never answered the much earlier question re: my Pagefile.
FYI, my pagefile resides on the C: drive, as per normal, which is an M.2 NVME SSD.
I run the pagefile.sys file at its maximum possible size, all the time, of 24,492 MB.
It's initial & maximum size is the same, so Windows never has to play around with it, as I believe this wastes Resources, both in Windows, and in HDD (SSD) access.
As I have a 500 GB SSD, the size of 23.9 GB is not really an issue.

I have attached images of the particulars.

Yes, I pretty much thought that that's what the lack of H/W acceleration would mean.

No, I have not installed the new driver yet.
This is because, now that we have determined that I have the correct Win7 Driver, it also turns out it IS the v391.35!
The Driver version number from Device Mgr properties should have dropped the clue for me:- 23.21.13.9135.
The file pkg I installed the current driver from is dated 23/Aug/18, & as stated previously the file is EXACTLY the same size as the new driver, which leads me to suspect that they are one & the exact same driver.
I think that is why I listed it as "FINAL", as I don't think the 560 Ti is included at all in newer Driver pkgs.


This afternoon I have been reading a lot about KB976264; the Win7 Application Compatibility Update.
This seems to be exactly the sort of Update I need, as it is specifically for fixing compatibility issues with legacy programs of all sorts, including games.
I remember trying to install it a while ago & having an error, but I cannot remember what. At the time, I thought the pkg might be corrupted.
I am having a lot of trouble finding a download for this KB, I could not even find it on the Microsoft Update Catalog, so may have to try with my original pkg I had the error with.
I am hoping that installing this KB may light the way.
It is certainly one thing worth trying.

I had already read many of this type of error, but none were answered as succinctly as the one you pointed out.
I get it now; no expansion necessary.
Unfortunately, it does mean it won't help my situation.

Fair enough, as you say, it cannot hurt.

As far as determining I have the correct Driver, it comes from the following:-
- Downloading the latest driver gives the same driver package details
- In Downloading the latest driver, I determined that it was DEFINITELY for Win7x64.
- Both driver pkgs are EXACTLY the same size.
The odds of 2 different driver pkgs, 2-3 years apart, having the same pkg size is astronomical.
- The Driver version number from Device Mgr properties = 23.21.13.9135.
- The last 5 characters tally with the 391.35 driver version, as in "3.9135".
- I have noticed previously that this is how the driver version number is specified in the actual driver properties' details.

Anyway, I WILL try it, to-be-sure, to-be-sure.


Yesterday I did a lot of research on Win7 Application Compatibility Update Packages and came across a few things of interest, such as:-
- KB976264 (Win7 Appln Compat Updt Pkg)
- KB2385678 (Security Updt for Win7)
- KB2670838 (Win7 Platform Update)

I tried to install all of these & received messages that they were already installed or they were "not applicable to your Computer".

Along with the above, I also discovered:-
- KB3020369 (Win7 April 2015 Servicing Stack Update)
- KB3125574 (Win7 SP1 Rollup Updt [SP2]).
KB3020369 is a Prerequisite for KB3125574, along with a couple of other KB's, which I will have to check are already installed, or download them.

KB3125574 (Win7 SP1 Convenience Rollup Update) is often unofficially called "SP2", hence the "[SP2]". Microsoft doies not like the SP2 moniker though and denies all.

I am hoping one of the above may help stabilise the system, if they are not already installed.
Either way, it is worth checking, to ensure the system is Update up-to-date.


I also found the Windows Assessment and Deployment Kit (Windows ADK), which contains the Application Compatibility Toolkit (ACT).
Long term, this toolkit may help me diagnose outstanding program incompatibility issues.

Yesterday, after uninstalling the old Driver all the Nvidia S/W, I installed the newly-download Nvidia v391.35 Driver & S/W.

I also confirmed that my Mobo (Gigabyte Aorus X470 Gaming 7 Wi-Fi) is a Revision 1.0 and not a Revision 1.1.
I was wondering that I had possibly installed the BIOS &/or drivers for the wrong revision.
This is now definitely NOT the case.

Over the weekend, I will perform some testing and attempt to initiate a BSOD D1 again.