Error codes

Code 30

The device is using an interrupt another device uses

What it means

Two devices were assigned the same IRQ and one of them cannot share it, so Windows disabled it.

Common causes

• BIOS assigned a legacy IRQ conflict
• An old expansion card that cannot share interrupts
• A driver that does not support message-signalled interrupts

How to fix it

1. Reset the BIOS to defaults and restart.
2. Move the card to a different slot, which usually gets a different interrupt.
3. Disable legacy or unused devices in the BIOS (serial ports, old controllers).
4. Update the chipset and device drivers.