Got the 400 psu but gpu is still not detected

[Joshlou]

@NonSequitur777, hi it's me again,

Finally got the PSU and successfully installed it all good but, my gtx 1050ti is still not detected, when I used HDMI on it doesn't display but it beeps twice then it restarts on it self, I also tried DP same result. I also tried reseating and cleaned the PCIE using compressed air. Deleted the driver using dedicated graphics card uninstaller, still no display.

Edit: The Pc just can't seem to detect it also on latest attempts, fan spins but no display and no beep seems pretty much dead. But it boots and displays after I connect the HDMI to the motherboard (I use DP to HDMI adapter on the motherboard). 

Edit: got the BIOS to Legacy support enable and Secure boot disable.

More information:

On first installation gpu was detected as unknown device, then I installed Nvidia app, restarted, and successfully installed it, played for a few minutes and turned it off. After that the gpu just won't get detected but the fan still spins. Hope this helps pinpoint the problem.

BIOS ver. 2.50 if there is an update I can't update it (tried updating but failed)

Windows 11 pro 

Intel core i7 6th gen

Gigabyte gtx 1050ti 4gb LP

16gb ram

HP Prodesk 600 g3 MT 

PSU: 400w HP p/n: 942332-001

[NonSequitur777]

@Joshlou,

Good to hear from you again!

Sorry, because of the Holidays and traveling out of State -hence the delay in responding.

So, based on your latest results, this no longer looks like a power-supply limitation. A GTX 1050 Ti requires no external PCIe power and your 400-watt HP PSU (942332-001) provides more than enough current on the 12 V rail for that card.

Since your card:

• was detected once and worked briefly,

• now spins its fan but is not detected,

• does not output video even with Legacy Support enabled and Secure Boot disabled,

• and the system boots normally using the integrated GPU,

Therefore, the two most likely causes are:

1. A failing or failed GTX 1050 Ti
   The symptoms match a card that worked initially and then lost proper PCIe initialization. This often occurs when a GPU's PCIe interface, VRAM, or voltage-regulation section starts to fail. Fan spin alone does not confirm that the card is healthy.

2. Fault with the PCIe x16 slot on the motherboard
   Less common, but still possible. If you have access to another PCIe x16 device (another GPU, RAID card, NIC, etc.), testing it in the same slot would confirm whether the slot is functional. Conversely, testing the 1050 Ti in another PC would confirm the health of the card.

At this stage, the most direct troubleshooting step is:

• Test the GTX 1050 Ti in another system
  If it fails there as well, you have your answer.
  If it works elsewhere, the PCIe slot or motherboard circuitry is suspect.

Given the card worked only once and then stopped being enumerated, I would lean toward a defective GPU, but a slot failure cannot be ruled out without cross-testing.

Kind Regards,

NonSequitur777

[Joshlou]

@NonSequitur777,

I brought it to a pc technician nearby three days after it won't get detected, the technician tried the gpu to their pc and it was detected, the seller I bought the gpu from also tested it with furmark and it was clean, no artifacts or stutter.

The technician didn't have any other GPU so we couldn't test another GPU if my PCIe is failing, I wanna believe it's not my PCIe since it detected on first installation.

Also I asked chatgpt to dig up any information regarding HP and GPU, I read something about HP's BIOS is quite picky with low profile GPUs and brand, and that most successful brand on HP was MSI.

Thank you for replying and happy holidays.