Is there another section in this forum for discussing apps hanging, rather than causing a BSOD? Or is this the right place? Operating System: MS Windows 7 Pro 64-bit CPU: Intel Core i7 920 @ 2.67GHz RAM: 9.0GB Triple-Channel DDR3 @ 531MHz 7-7-7-20 Motherboard: DELL Inc. 0X501H (CPU 1) Graphics: Dell 2209WA(Digital) on NVIDIA GeForce GTS 240 Hard Drives: 640GB Western Digital WDC WD6400AAKS-75A7B2 (IDE) 300GB Maxtor Maxtor OneTouch II IEEE 1394 SBP2 Device (1394) Optical Drives: HL-DT-ST BD-RE BH20N PLDS DVD+-RW DH-16AAS HP Virtual CD 4607 USB Device Audio: Sound Blaster X-Fi Xtreme Audio Something is changed or corrupted: For the first 9 months of using this computer, purchased with the OS preinstalled, MPG files opened, by default, with Windows Media Player 12, and ran as expected. Now, I get intermittent failures and successes, mostly the former. I went to the MS download site, and learned that there is no download of just WMP12, because it is part of Win7. I have never experienced these problems with WMP11 on WinXP. A common sequence of events is: A given MPG (a home movie clip created using Roxio) opens and plays as expected. I close WMP, and open the very same file. WMP virtually hangs with “opening media” phase never completing and the file never playing. So, I close WMP by clicking the X in the upper right corner. Task Manager shows “Default IME Not Responding.” I kill/end it in Task Mgr. Sometimes WMPlayer.exe is still a Process, though WMP is not in the Task Mgr application list. Sometimes I get a “Server execution failed.” It has always been my experience that if I “open with” Windows Live Movie Maker, instead of the default WMP, the file plays as expected. They also “open with” VLC Media Player, and play as expected, tho I do need to select Audio Track 2. Therefore, I decline to blame the MPG file, but something to do with WMP. Please know that in accordance with some forum posts, I have used services.msc to disable Windows Media Player Network Sharing Service. The failure of WMP to open MPG files is intermittent, inconsistent, unpredictable. I activated this computer in January, and the problems are only in the past 2 or 3 weeks. Please give me a clue to solving this issue.