DOCUMENT:Q164305 21-FEB-2002 [win95x] TITLE :Performance Problems Using USB Camera PRODUCT :Microsoft Windows 95.x Retail Product PROD/VER::2.1 OPER/SYS: KEYWORDS:kbenv osr2 win95 win98 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows 95 OEM Service Release, version 2.1 - Microsoft Windows 98 ------------------------------------------------------------------------------- SYMPTOMS ======== When you use a USB camera with certain PCI video cards in Windows 95 OEM Service Release version 2.1 (OSR2.1), performance may be reduced or your computer may seem to stop responding (hang). Video playback may also be affected. CAUSE ===== Certain PCI video cards may not work well with isochronous transactions, which USB cameras require. The video card may require several attempts to complete an operation. RESOLUTION ========== To resolve this problem, use the following steps: 1. In Control Panel, double-click Display. 2. On the Settings tab, click Advanced Properties. 3. On the Performance tab, move the Hardware Acceleration slider to None. 4. Click OK or Close until you return to Control Panel. When you are prompted to restart the computer, do so. Additional query words: 95 pcmcia ====================================================================== Keywords : kbenv osr2 win95 win98 Technology : kbWin95search kbWin98search kbOPKSearch kbWin98 kbWin95OPKOSR210 Version : :2.1 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.