Visit the official support website of your manufacturer and install the latest Chipset drivers. Method 4: Update/Configure BIOS/UEFI
Legacy serial ports require fixed resources (typically I/O address 03F8 and IRQ 4 for COM1). In the device window, go to the Resources tab. Uncheck Use automatic settings .
If the issue reoccurs after a future Windows update, repeating Method 1 often pulls the most compatible driver. pnp0500 driver updated
Updating the chipset often "refreshes" the PNP0500 port automatically. Method 3: Windows Update Optional Updates
Select . Uncheck Show compatible hardware if the list is blank. Visit the official support website of your manufacturer
If you have updated the driver but still see an error, the issue is likely a .
Visit the support page for your motherboard (e.g., ASUS, MSI, Gigabyte). Uncheck Use automatic settings
Save changes and exit. The device will completely disappear from Windows, preventing further update errors. Summary of Technical Specifications Technical Detail ACPI\PNP0500 or *PNP0500 Class Ports (COM & LPT) Driver File serial.sys / msports.inf Typical Error Codes Code 10, Code 34, Code 43 Primary Resolution Manual Driver Rollback / BIOS Disablement
Yes. In Linux, the same ID is used to identify 8250/16550‑compatible serial ports. The Linux kernel includes a standard serial driver ( 8250 driver) that automatically handles PNP0500 devices enumerated by ACPI.
Choose an alternative configuration from the dropdown menu that allocates standard Input/Output ranges (e.g., 03F8-03FF for COM1) and standard IRQs. Method 4: Toggle the Serial Port in BIOS/UEFI