What is an IRQ conflict?
PC’s use 16 interrupts (known as IRQs, or Interrupt ReQuests), numbered 0 to 15, with IRQ 0 reserved by the computer and not configured to a device. All peripheral computer hardware (mouse, keyboard, display adapter, modem, etc.) communicates with the CPU through an interrupt. Each hardware device requires a unique IRQ, and though two devices can, in rare instances, share an interrupt, it is not recommended. When two devices attempt to share the same interrupt, either or both devices may not work properly.