I have a Pioneer DVD-Rom and every time I try to play a movie I get the message MMSYSTEM263: This device is not a registered MCI device. This problem happened before and it had something to do with Dos CD-ROMS but i have no idea how to fix it. somebody please help me.

See if this applies to you. No Sound, MMSystem or MCI Errors In Windows 95/98 -------------------------------------------------------------------------------- The information in this article applies to: Microsoft Age of Empires, version 1.0 Microsoft Ancient Lands for Windows, version 1.0 Microsoft Art Gallery for Windows, version 1.0 Microsoft Bookshelf '95 for Windows 95 Microsoft Bookshelf 1996-97 for Windows Microsoft Bookshelf for Windows, 1993, 1994 and 1995 editions Microsoft Close Combat: A Bridge Too Far, version 2.0 Microsoft Cinemania for Windows, 1994, 1995 and 1996 editions Microsoft Complete Baseball for Windows, 1994 edition (see below) Microsoft Complete Gardening for Windows, version 1.0 Microsoft Complete NBA Basketball for Windows, 1994-1995 edition Microsoft Creative Writer for Windows, versions 1.0, 2.0 Microsoft Dangerous Creatures for Windows, version 1.0 Microsoft Dinosaurs for Windows, version 1.0 Microsoft Encarta Encyclopedia for Windows, 1996, 1997 Standard, 1997 Deluxe editions Microsoft Encarta World Atlas for Windows, 1996, 1997 editions Microsoft Flight Simulator for Windows 95, version 6.0 Microsoft Encarta for Windows, 1993, 1994, and 1995 editions Microsoft Fine Artist for Windows, version 1.0 Microsoft Issac Asimov's The Ultimate Robot for Windows, version 1.0 Microsoft Multimedia Mozart for Windows, version 1.0 Microsoft Multimedia Schubert for Windows, version 1.0 Microsoft Multimedia Strauss for Windows, version 1.0 Microsoft Multimedia Stravinsky for Windows, version 1.0 Microsoft Music Central for Windows, 1996 edition Microsoft Musical Instruments for Windows, version 1.0 Microsoft Reader's Digest Complete Do-It-Yourself Guide for Windows, version 1.0 Scholastic's Magic School Bus series: Explores Inside the Earth for Windows, version 1.0 Microsoft SoundBits (all collections), version 1.0 Microsoft Encarta World Atlas for Windows, 1996 edition Microsoft Wine Guide for Windows, versions 1.0, 1.0a, 2.0 Microsoft World of Flight for Windows, version 1.0 Microsoft Windows 95 operating system Microsoft Complete Baseball Guide for Windows, 1995 edition Scholastic's Magic School Bus series: Explores the Human Body for Windows, version 1.0 Scholastic's Magic School Bus series: Explores the Ocean for Windows, version 1.0 Scholastic's Magic School Bus series: Explores the Solar System for Windows, version 1.0 -------------------------------------------------------------------------------- SYMPTOMS When you run one of the programs listed at the top of this article on a computer running Microsoft Windows 95 or Microsoft Windows 98, you may experience one of the following symptoms You do not hear any sounds in Microsoft Art Gallery or Encarta 1997. Sound or video controls in the Media Gallery are not available. When you attempt to play a video clip, the cursor briefly changes to an hourglass and the program does not play the video clip. or you may receive one of the following error messages: MMSYSTEM263 This is not a registered MCI device. This may be followed by one of the following lines depending on which device is not installed: device:WaveAudio device:Sequencer file: :\\.avi Wave Error 10: MMSYSTEM263 This is not a registered MCI device. Wave Error 7: MMSYSTEM263 This is not a registered MCI device. MMSYSTEM281 This file could not be played. Check file or install a driver that supports this type of file. Failed to open Sound/Wave device driver. Please check that Sound/Wave is installed. For more information see Read Me. Video not available. The correct CD must be in drive D: to continue. There is not enough memory available to play videos. Try closing other applications, or consult "Troubleshooting" from the Help screen. Encarta World Atlas cannot provide access to the audio content in the product, because audio compression codecs are disabled or not installed. Try enabling the codec in the multimedia control panel, or install the driver if it is not present. CAUSE This behavior can occur if one of the Media Control Interface (MCI) Devices is disabled, not installed, or the line for the device is missing in the Win.ini file. RESOLUTION To resolve this issue, follow these steps: Click Start, point to Settings, and then click Control Panel. Double-click the Multimedia icon. On the Advanced tab in Windows 95, or on the Devices tab in Windows 98, double-click Media Control Devices. Click Wave Audio Device (Media Control), and then click Properties. Click Use This Media Control Device, and then click OK. Repeat steps 4-5 for MIDI Sequencer Device (Media Control) and Motion Video Device (Media Control), and then click OK. Close Control Panel, and then restart Windows 95. If one of the media control devices is missing, or if the issue continues to occur, please see the following article in the Microsoft Knowledge Base: Q141349 Error Message: MMSYSTEM281 This File Could Not Be Played

Still did not solve problem. I have a samsung DVD and just installed a Creative sounblaster live mp3+ soundcard. What is the solution to my problem? Thanks in advance steve

What do I do? I get "Error: No MCI device open." whenever i try to install Ages of Empires 2. How do I fix this problem. I have tried everything including the above.

Well I have already tried all of the above and most sites that i have searched to find a resolution to my problem gave me the same exact ressolution steps on how to resolve my problem. I have a Real magic Hollywood Plus and whenever I want it to start and it gives me the same error message Mci...... Help I really need It!!! Thanks in advance for helping.