Tutorial Home > PC Hardware > Laptops > Use and Troubleshoot a Laptop > Controlling the BIOS Controlling the BIOS The BIOS (basic input/output system) is the low-level command center for all of your laptop's peripherals and internal system resources. Occasionally you may find it necessary to access the BIOS to change an IRQ (interrupt request number), a memory address, or even the boot sequence of the drives in your laptop. Examine these common BIOS tasks.
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