Please excuse me for creating a new thread. I am starting this thread to capture driver feedback for NVIDIA WHQL display driver R326.01 for Windows 8.1 Preview. Since a few users have reported this driver did not show up in their Windows Update, we are releasing them separately so that users may have access to them. If you already installed these drivers and are not experiencing any issues, you do not need to reinstall these drivers below. If however you did not see this driver through Windows Update and had to install a modified version, we ask that you first attempt a clean install using the driver below. Many support cases we receive from end users are easily solved by performing a clean install. Geforce Desktop GPUs Download: http://www.guru3d.com/files_details/..._download.html Geforce Notebook GPUs Download: http://www.guru3d.com/files_details/..._download.html Providing Feedback: Please feel free to leave feedback for any driver related issues specific to this driver. By providing your information here, you may also help others who may be experiencing the same issue you are. The more information we receive from you and others, the easier it will be for us to reproduce this issue in our labs and provide a fix through a future driver. Please provided the following information we request as best you can. Alternately, you may provide this same information through our NVIDIA Display Driver Feedback Form from the URL below: http://surveys.nvidia.com/index.jsp?...f07694a40f8ac6 Please provide the following information as best you can: 1) Graphics card/GPU make and model: 2) Is your graphics card manually overclocked/factory overclocked? If your graphics card is factory overclocked or manually overclocked, we recommend that you lower the clock speeds of your graphics card to NVIDIA reference clock speeds and then make another attempt to reproduce the issue you are encountering. For graphics cards which are factory overclocked, you may use a 3rd party utility such as eVGA Precision or MSI Afterburner to adjust the clock speeds of your graphics card. Our NVIDIA Products page lists the NVIDIA reference clock speeds for each of our GPUs. 3) If your issue is specific to a game or application, please provide the title and if possible version of the software 4) Describe the display driver issue you are encountering and if possible include step by step instructions on how to reproduce this bug. Please use the knowledge base article "How to provide valuable feedback to NVIDIA" as a guide to help you include information that will help us root cause the problem. http://nvidia.custhelp.com/app/answers/detail/a_id/3141 5) Software/driver issues can sometimes be specific to a users system configuration. If your system information in not part of your profile that appears with each of your posts, lease provide your system information so that we may attempt to match it as closely as possible. CPU make and model: Amount of system memory: Motherboard make and model (if OEM system, please provide your PC make and model instead): Motherboard BIOS version: Monitor(s) make and model: Sound card make and model: 6) If your system meets the driver requirements however the installation process fails or gives you an error message, please reinstall the driver with logging enabled so that we may investigate the cause for this issue. Instruction available from the URL below: http://nvidia.custhelp.com/app/answers/detail/a_id/3171 Log files may be emailed to email@example.com Thank you for your feedback.