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D e f a u l t I R Q A s s i g n m e n t s ( c o n t in u e d )
IRQ | Used/Available |
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IRQ9 | Available |
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IRQ10 | Available |
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IRQ11 | Available |
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IRQ12 | Used by the mouse port |
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IRQ13 | Used by the math coprocessor (if applicable) |
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IRQ14 | Used by the primary/secondary IDE controller (if enabled) |
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IRQ15 | Used by the primary/secondary IDE controller (if enabled) |
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BIOS Recovery Utility
If your computer loses power and beeps constantly but does not boot when power is restored, the BIOS settings may be corrupted. However, these symptoms can be caused by several different problems. Before you restore the BIOS, check the beep codes and diagnostic lights to see if a specific problem is identified. Otherwise, perform the following steps to restore the BIOS:
1Turn off the computer and disconnect it from its electrical outlet.
2Go to a different computer that is working properly, and download the BIOS update utility for the computer from the Dell support website.
NOTE: After you download the BIOS update utility, generate the BIOS recovery utility. To generate the recovery utility, you can use any functioning computer. You do not have to use a computer of the same type or model as the malfunctioning computer.
aGo to http://support.dell.com.
If this is your first time to use this website, complete the
bClick Downloads for Your Dell.
cEnter the Service Tag Number for the computer or select the appropriate Dell system.
dSelect the appropriate OS and language for the malfunctioning computer.