DVD Device Reports Drive/Disc Error Until Media Is Reinserted

ID: Q223809

The information in this article applies to:

Microsoft Windows 98

SYMPTOMS

If there is a DVD disc in the DVD player when you start Windows 98 and all of the computer's IRQs are in use, you may receive the following error message when you start the MediaMatics Express player:

No valid drive/disc found

After you eject and reinsert the disc, or you query the drive using Windows Explorer, the problem no longer occurs.

CAUSE

The Installable File System Manager (IFSMGR) is improperly handling Plug and Play rebalancing.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Windows 98 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:


   Date      Time    Version      Size    File name   
   -------------------------------------------------
   03/17/99  09:28p  4.10.2000   185,926  Ifsmgr.vxd

NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, and if it is determined that you only require the fix you requested, no fee will be charged. However, if you request additional technical support, and if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support, you may be charged a non-refundable fee.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:

Q154871 Determining If You Are Eligible for No-Charge Technical Support

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

MORE INFORMATION

This problem is known to occur on the IBM ThinkPad 600E notebook computer using Windows 98 when all IRQs are consumed by hardware. If all of the IRQs are not used, the problem does not occur. For example, the problem does not occur if you disable the notebook's IR port and reboot.

The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional query words:


Keywords          : kb3rdparty kbhw win98 kbIFS 
Version           : WINDOWS:
Platform          : WINDOWS 
Issue type        : kbprb

Last Reviewed: July 2, 1999