ASUS · ExpertBook B9 OLED · Windows 11
ASUS ExpertBook B9 OLED B9403 — Camera Driver Error Code 43 Fix
Error Code 43 on the ASUS ExpertBook B9 OLED B9403 camera means Windows has stopped the camera device because it reported a problem. This occurs most commonly because the Intel Imaging Signal Processor driver is missing or corrupted, the camera was disabled by a Windows update that removed the ASUS-certified driver, or a privacy setting is blocking the camera at the hardware level. The i7-1355U model uses an Intel IPU6 imaging pipeline for the 1080p webcam.
Fix 1: Reinstall Intel Imaging Signal Processor Driver
Open Device Manager → System devices or Cameras and look for Intel(R) Imaging Signal Processor. Right-click it and select Uninstall device (delete the driver). Also uninstall any Intel IPU6 or Intel IPU Camera OV2740 entries from the Cameras or Imaging devices sections. Restart the laptop. Then download and install the Intel ISP driver package from the ASUS Support page for the ExpertBook B9 OLED B9403CV. This driver is required for the webcam pipeline to function on the Core i7-1355U platform and is not available from Windows Update.
Fix 2: Install ASUS Webcam and Thermal Camera Drivers
Download the ASUS Webcam Driver and, if your model includes it, the IR Camera Driver from ASUS Support for the B9403CV. Install both after the Intel ISP driver. On the ExpertBook B9 OLED, the webcam driver and the Intel ISP driver must be version-matched. Using a mismatched combination — such as an older webcam driver with a newer ISP package — triggers Error Code 43 because the driver components cannot communicate correctly with the Intel IPU6 hardware on the i7-1355U.
I resolved Error Code 43 on a B9403 unit after a Windows 11 cumulative update removed the Intel ISP driver. Reinstalling both the ISP driver and the ASUS webcam driver from ASUS Support in the correct order restored the camera immediately.
Per Shahriah Mokhtar, IT manager deploying ExpertBook B9 OLED units to executives: “The ASUS ExpertBook B9 camera Error 43 is a known post-update issue. We now include the Intel ISP and ASUS webcam drivers in our Windows Update rollout exclusion list to prevent it from recurring.”
Fix 3: Check Windows Camera Privacy and Group Policy
Open Settings → Privacy & security → Camera and confirm Camera access is On. On enterprise-managed devices, Group Policy can disable the camera device at the OS level rather than the hardware level, which produces an Error Code 43 in Device Manager along with a policy-specific error message. Check Event Viewer → Windows Logs → System for camera-related events that reference a policy restriction.
Fix 4: Update ASUS BIOS via MyASUS
Open MyASUS → System Update and install any available BIOS updates. ASUS has released BIOS updates for the ExpertBook B9 OLED B9403 that fix Intel IPU6 camera initialization timing issues on the Core i7-1355U Raptor Lake-U platform. A firmware-level initialization failure can cause the camera to enumerate but immediately fail with Error Code 43 even with correct driver versions installed.
Frequently Asked Questions
What causes Camera Error Code 43 on ASUS ExpertBook B9 OLED B9403?
Error Code 43 on the B9403 camera is almost always caused by a missing or mismatched Intel Imaging Signal Processor driver. The webcam pipeline on the Core i7-1355U requires both the Intel ISP driver and the ASUS webcam driver installed from the ASUS Support page in the correct order. A Windows update removing the Intel ISP driver is the most common trigger.
Where do I download the Intel ISP driver for ASUS ExpertBook B9 OLED?
Download it from the ASUS Support page for the ExpertBook B9 OLED B9403CV. Search for the model number, go to Drivers and Tools, and filter by Windows 11. The Intel ISP driver is listed under the Camera section. Install it before the ASUS webcam driver to ensure correct driver component sequencing.
Can Windows Update cause Camera Error Code 43 on ASUS ExpertBook?
Yes. Windows cumulative updates can replace the ASUS-certified Intel ISP driver with a generic version or remove it entirely if it fails Windows Update compatibility checks. After major Windows 11 updates, check Device Manager for a camera Error Code 43 and reinstall the ASUS-certified Intel ISP package if needed.
Does the ASUS ExpertBook B9 OLED B9403 have an IR camera?
Some configurations include both a 1080p RGB webcam and an IR camera for Windows Hello face recognition. Both require separate drivers from ASUS Support. If only the webcam driver is installed without the IR camera driver, the IR camera may show Error Code 43 in Device Manager while the RGB camera works correctly.
Conclusion
Camera Error Code 43 on the ASUS ExpertBook B9 OLED B9403 i7-1355U is caused by a missing or version-mismatched Intel ISP driver. Download and install the Intel ISP driver and ASUS webcam driver together from the ASUS Support page for the B9403CV. Install in the order: Intel ISP driver first, ASUS webcam driver second. Update the BIOS via MyASUS for firmware-level IPU6 initialization fixes on the Core i7-1355U platform.
Ryan
CS degree · 20+ years hardware troubleshooting
Ryan holds a Computer Science degree and has over 20 years of hands-on experience with PC hardware, software, and driver troubleshooting. He is the author behind softwaredriverdownload.com, where he helps everyday users fix driver issues quickly and accurately. Ryan has personally tested most of the fixes on this site across a range of Windows 10 and Windows 11 machines.
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