Device Manager error: 'Windows has stopped this device because it has reported problems' (Code 43)

Symptoms

• Device shows a warning icon with Code 43 in its properties
• The device stops working entirely, not just partially
• Often affects graphics cards, USB devices, or webcams
• May follow a driver update, Windows update, or the device simply failing

Likely causes

• CommonDriver crash or corruption reported by the deviceThe device itself reports a fault to Windows, which then disables it as a protective measure.
• CommonOutdated or buggy driverEven without hardware failure, a bad driver can cause the device to report a false problem.
• PossibleUSB power management settings disabling the deviceOn USB devices specifically, Windows's selective suspend feature can sometimes cause this error incorrectly.
• PossibleFailing hardware (graphics card, USB controller, or the device itself)On graphics cards especially, Code 43 can indicate the card is genuinely failing.
• Less commonInsufficient power delivery to the deviceSome USB devices reporting Code 43 are simply not getting enough power from the port or hub.

What to do

1. Restart the PC first, since this can sometimes clear a stuck driver state without other changes.
2. Uninstall the device in Device Manager (right-click > Uninstall device), then restart, which lets Windows attempt a fresh driver installation.
3. Update the driver directly from the manufacturer's website rather than relying only on Windows-provided drivers.
4. For USB devices, go to the device's Properties > Power Management tab and uncheck 'Allow the computer to turn off this device to save power,' if that option is present.
5. Try the device in a different USB port, ideally one connected directly to the motherboard rather than through a hub, to rule out a power or port issue.
6. For graphics cards, check if the card works properly in another computer if possible, which would point to a Windows/driver issue rather than hardware failure.
7. If Code 43 persists across a clean driver reinstall and different ports, and especially if it's a graphics card, treat this as likely hardware failure.

Tools and parts

• Another device to download drivers if needed

When to call a pro

If a clean driver reinstall, checking power management, and trying different ports doesn't clear Code 43, the device itself has likely failed and a technician can confirm this before replacement.

Safety