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Check that the volume control on the computer is turned up. If you are using external headphones or speakers, check that they are securely connected to your computer. The computer emits a loud, high-pitched noise. This is feedback between the microphone and the speakers. It occurs in any sound system when input from a microphone is fed to the speakers and the speaker volume is too loud. Adjust the volume control. ExpressCard® problems ExpressCards® include many types of devices, such as a removable hard disk, additional memory, or a pager. Most ExpressCard problems occur during installation and setup of new cards. If you are having trouble getting one or more of these devices to work together, several sections in this chapter may apply. Resource conflicts can cause problems when using ExpressCards. See “Resolving a hardware conflict” on page 161. If Something Goes Wrong If Something Goes Wrong Resolving a hardware conflict If your system does not have built-in drivers for your ExpressCard and the card did not come with an operating system driver, it may not work under the operating system. Contact the manufacturer of the ExpressCard for information about using the card under the operating system. ExpressCard® checklist . Make sure the card is inserted properly into the slot. . Make sure all cables are securely connected. . Occasionally a defective ExpressCard®slips through quality control. If another computer with a ExpressCard slot is available, try the card in that machine. If the card malfunctions again, it may be defective. Resolving ExpressCard® problems Here are some common problems and their solutions: The slot appears to be dead. ExpressCards® that used to work no longer work. Check the ExpressCard® status: 1 Click Start, Control Panel, System and Maintenance, and then Device Manager. 2 Double-click the appropriate ExpressCard, which will be listed under one of the categories shown, for example: Disk drives, Network adapters, Other, etc. The operating system displays your ExpressCard’s Properties dialog box, which contains information about your ExpressCard configuration and status. The computer stops working (hangs) when you insert an ExpressCard® . The problem may be caused by an I/O (input/output) conflict between the socket and another device in the system. Use Device Manager to make sure each device has its own I/O base address. See “Fixing a problem with Device Manager” on page 162 for more information. Since all ExpressCards® share the same socket, each card is not required to have its own address. If Something Goes Wrong If Something Goes Wrong Resolving a hardware conflict Hot swapping (removing one ExpressCard® and inserting another without turning the computer off) fails. Follow this procedure before you remove an ExpressCard®: 1 Click the Safely Remove Hardware icon in the Notification Area. The Safely Remove Hardware screen appears. 2 Click Safely remove for the device you want to swap. 3 Select the item you wish ...

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