Before I state the problem and ask for causes/solutions: 1. I usually switch between 8 and 8.1 on a 3-4 day basis and plan on doing so for some time more. 2. I keep a relatively clean win 8 and 8.1 image with only updates, disk management letters, store updates, etc. No software is installed except NVIDIA drivers (required for native resolution). That too only the driver and not the phyx, audio, stuff etc. 3. On this image, I periodically (45-60 days) reinstall with all programs and that takes me max 2 hours so no sweat. 4. My latest system was win 8.1/office 2010 and win 8/office 2013 (both with NVIDIA 332.21) built in Jan 2014. The problem: 1. Yesterday with the release of office 2013 sp1, I thought it might be a good idea to reinstall win 8/office 2013. 2. So I restored the main win 8 image and started building the system. 3. Installed latest NVIDIA driver 334.87 and then built the complete system. 4. I keep videos in a dedicated partition called H, J and K and with a shortcut in libraries/videos. 5. For many programs example firefox, vlc, convertxto dvd, imgburn; when I click on open/save as and point to videos in libraries, the program hangs and stops responding. I then have to open the task manager, close the software and then do the below: 6. This is not a problem if I point open/save as to the drive letter (H, J, K) Any thoughts/solutions as to why this might be occuring and any solutions. If it helps, the older win 8/office 2013 image did not have this problem or it happened maybe once in 20-25 instances. Now I am getting this problem in maybe 90% of all instances.