When you run Windows on a Sony 700 series laptop which uses an SMC IRDA port, you may encounter any of the following issues:

•	You hear unusual sounds emanate from the sound card every three seconds.
•	You receive trap error messages (blue screen) in Irlamp.vxd or Fastir.vxd.
•	You receive trap error messages when you use Infrared Monitor (IRMON) and after you use the suspend or resume features.
•	You may see yellow exclamation points (!) in Device Manager after you use suspend or resume features.

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These issues can occur if Device Manager does not use the same settings for the device that the BIOS uses.

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To resolve this issue, contact Sony and inquire about a BIOS upgrade for your laptop computer.

To work around this issue, manually disable the SMC IR device using the following steps:

1.	Click Start, click Settings, and then click Control Panel.
2.	Double-click System, and then click the Device Manager tab.
3.	Click the plus symbol (+) that is left of the SMC IR port, and then double-click the SMC IR device.
4.	Click to select the Disable in this hardware profile check box, click OK, and then click Close.
5.	When you are prompted to restart the computer, click Yes.

The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

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