How to fix or check for possible damage to GPU or PSU?

Collin G 20 Reputation points
2026-06-18T21:02:34.1433333+00:00

Windows 11, Dell XPS 8960 desktop, had it plugged into a surge protector, but whatever took the power down apparently has made my desktop no longer completely recognize the GPU (Nvidia 4060). I say "completely" because I can see it in the BIOS menu, it's recognized there, but something has happened in the "main operating environment" where I can't see the card in Task Manager or Device Manager. The Nvidia App is not functioning, as the driver for the card apparently no longer exists and I'm getting an error about the app being unable to connect to Nvidia, so I'm currently downloading a manual driver to install to see if that fixes the issue, or at least helps in some way. The card LED is lighting up, I did reseat it in the slot and reconnected the cable, so it seems like it should be working. No visible damage to the slot or card itself, but I didn't exactly take a microscope to it. My monitor is even connected to the GPU and still displaying, so I have no idea what's going on.

I mentioned the PSU since I've been seeing issues where if the PSU isn't supplying enough power, the card won't work either, but I'm concerned about messing with that just in case.

Windows for home | Windows 11 | Devices and drivers
Answer accepted by question author

AI answer

2026-06-18T21:02:58.0633333+00:00

Follow these steps to isolate whether the issue is driver/software, GPU, or PSU related.

  1. Confirm the GPU is detected at all in Windows
    Since the monitor is connected to the 4060 and you have display output, Windows is using some graphics path. However, if the discrete GPU is not visible in Device Manager, it may be:
  • Hidden as an unknown device
  • Disabled
  • Failing to start with a driver error (for example, Code 43)

Steps:

  1. Press Win + X > Device Manager.
  2. Select View > Show hidden devices.
  3. Expand Display adapters and Other devices.
  4. Look for:
    • The NVIDIA 4060 listed with a yellow exclamation mark (driver error), or
    • An “Unknown device” that could be the GPU.

If you see a device with a yellow exclamation mark and Code 43, follow the driver steps below.

  1. Cleanly reinstall the NVIDIA driver
    Power events often corrupt drivers. A clean reinstall can restore proper detection.

A. Basic uninstall/reinstall via Device Manager (if the GPU appears):

  1. In Device Manager, right‑click the problematic GPU entry.
  2. Select Uninstall device > check Attempt to remove the driver for this device if available > OK.
  3. At the top of Device Manager, right‑click the PC name and select Scan for hardware changes to let Windows reinstall a basic driver.
  4. Then install the latest NVIDIA driver you downloaded manually.

This follows the same pattern as the documented fix for graphics error Code 43: uninstall the device, then scan for hardware changes to reinstall the driver, and finally confirm the device status shows “This device is working properly.”

If the NVIDIA App still fails after this, but Device Manager shows the GPU as working, the issue is likely with the app rather than the hardware.

  1. If the driver will not install or the GPU never appears
    If the 4060 does not appear in Device Manager at all (even as hidden/unknown), but works enough to output video, Windows may be using integrated graphics and the monitor is actually connected to the motherboard output, not the GPU. Double‑check that the cable is truly plugged into the 4060’s ports.

If the cable is definitely on the 4060 and Device Manager still does not show it:

  • This suggests a deeper driver or system corruption.
  • Run system file and image repair:
    1. Open Command Prompt (Admin).
    2. Run: sfc /scannow
    3. After it completes, run: DISM /Online /Cleanup-Image /RestoreHealth
    4. Restart and check Device Manager again.

These commands are also used in GPU‑related troubleshooting to repair corrupted system files and component store.

  1. Check for TDR / GPU errors in Event Viewer
    Power issues or marginal hardware can cause TDR (Timeout Detection and Recovery) events and LiveKernelEvent 141/1b8 errors.
  2. Right‑click Start > Event Viewer.
  3. Go to Windows Logs > System.
  4. Look for recent Display, nvlddmkm, or LiveKernelEvent‑related errors around the time of the problem.

Frequent VIDEO_TDR‑related errors (like bug check 0x116 or 0x117) point to:

  • Unstable GPU driver
  • Overheating
  • Power delivery issues

If you see these, updating to the latest NVIDIA driver and ensuring adequate cooling and power are key.

  1. Basic PSU and hardware checks (non‑invasive)
    Without opening the PSU or doing risky work:
  2. Ensure all PCIe power connectors to the 4060 are fully seated on both GPU and PSU ends.
  3. Make sure the GPU is firmly seated in the PCIe slot (you already reseated it, which is good).
  4. Watch for symptoms of power instability:
    • System shutting off under GPU load
    • Black screens and fans ramping to 100% under load
    • Repeated LiveKernelEvent 141/1b8 or VIDEO_TDR errors

In a similar case of GPU black screens and LiveKernelEvent 1b8, the root cause was overheating and power/board instability; fixing cooling (replacing dried thermal paste) and discharging static resolved the issue. For a prebuilt Dell, focus on:

  • Ensuring case fans and GPU fans are working and dust is minimal.
  • Avoiding overclocking.
  • Testing under moderate load (a game or GPU benchmark) while monitoring temperatures.

If the system is stable under load and no new errors appear, the PSU is likely still OK.

  1. When to suspect permanent GPU or PSU damage
    Consider hardware damage more likely if, after driver and system repair:
  • The 4060 never appears in Device Manager on a clean driver install.
  • The system repeatedly logs GPU TDR or LiveKernelEvent errors even with fresh drivers and normal temperatures.
  • The PC shuts off or reboots under GPU load.

At that point, the next safe steps are:

  • Test the 4060 in another known‑good PC, or test another GPU in this PC.
  • If that is not possible, contact Dell support; the XPS 8960 PSU and GPU are OEM parts and should be evaluated or replaced under warranty if still covered.
  1. If the screen goes blank or Windows will not boot normally
    If further driver experiments cause blank screens or crashes, use Safe Mode to recover:
  2. Force shutdown by holding the power button for ~10 seconds. Repeat 2–3 times until Windows enters Recovery Mode.
  3. Go to Troubleshoot > Advanced options > Startup Settings > Restart.
  4. Press F5 for Safe Mode with Networking.
  5. In Safe Mode, uninstall the NVIDIA driver from Device Manager and reinstall a known‑good version.

This Safe Mode approach is also recommended in advanced blank‑screen troubleshooting.

References:

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