unable to add Hauppauge HVR-2250 TV tuner PCIe to HP EliteDesk 800 G3 TWR

[eyesfire2]

trying to add a Hauppauge HVR 2250 PCIe TV Tuner (https://hauppauge.com/pages/products/data_hvr2255.html) to my desktop HP EliteDesk 800 G3 TWR (I5 7500 + HP 8298 motherboard), however after the card is inserted and the PC is restarted, the device isn't found in device manager or in hwinfo.

1: the card works (added to a different PC, card shows up properly and as expected)
2: the PCIe slot works (added multiple different PCIe card to the slot the tv tuner was in on the HP, and those were seen)

3: tried all PCIe slots, no difference

4: upgraded bios to latest version (prior 2.15, now at latest 2.50)

5: tried clearing CMOS

6: tried disabling any and all security / power settings in BIOS (possible to have missed one)

7: tried reseting BIOS to defautl

8: updated all firmware i can think of/available from the support page (intel chipset, bios)
9: tried booting off a USB-live-linux OS and using lspci, however like windows it just doesn't see the card

10: HWinfo 64 reports that the card is "in use" (i.e. the PCIe slot isn't empty), but doesn't see anything furhter

11: updated windows 10 to latest patch (as of 10/2/2024)

when i try to look at any PCI logs on the HP, it's just like the MB/chipset or something can't read the TV Tuner specifically. does anyone have any ideas or have a similar experience between HP and Hauppauge products / PCIe TV tuners? the only real detail i can see is when i view the PCIe port in device manager i see these two event:

event 1 (pci starting):

Device PCI\VEN_8086&DEV_A295&SUBSYS_8298103C&REV_F0\3&11583659&0&E0 was configured.

Driver Name: oem2.inf
Class Guid: {4d36e97d-e325-11ce-bfc1-08002be10318}
Driver Date: 07/18/1968
Driver Version: 10.1.11.4
Driver Provider: INTEL
Driver Section: Needs_PCI_DRV
Driver Rank: 0xFF2001
Matching Device Id: PCI\VEN_8086&DEV_A295
Outranked Drivers: pci.inf:PCI\CC_0604&DT_4:00FF2007 pci.inf:PCI\CC_0604:00FF2008
Device Updated: true
Parent Device: ACPI\PNP0A08\0

event 2 (pci cannot start):

Device PCI\VEN_8086&DEV_A295&SUBSYS_8298103C&REV_F0\3&11583659&0&E0 had a problem starting.

Driver Name: oem2.inf
Class Guid: {4d36e97d-e325-11ce-bfc1-08002be10318}
Service: pci
Lower Filters:
Upper Filters:
Problem: 0x15 <----
Problem Status: 0x0