BSOD/Infinite Loop during Boot on Toshiba Laptop - EHCI_GetRegistryParameters Unimplemented & IRQ Conflict

(AI helped me write and report this)

Category: Kernel / Drivers / USB

Environment: Real Hardware (Toshiba Satellite L300 laptop with an Intel Celeron 585)

ReactOS Version:  reactos-bootcd-0.4.16-dev-2331-gc9e73b6-x86-gcc-lin-dbg

Installation Media: USB Flash Drive (Direct Install)

Description:

Attempting to boot ReactOS from a USB stick on a physical Toshiba laptop results in a boot loop/hang. The screen displays a series of resource conflicts and unimplemented USB functions. The kernel appears to struggle with the PCI bus adjustment and the EHCI (USB 2.0) controller.

Observed Error Logs (from Screen Debug):

• Resource Conflict: ntoskrnl/io/pnpmgr/pnpres.c:648: Resource conflict: IRQ (0xb 0xb vs. 0xb 0xb)

• HAL Failure: hal/halx86/legacy/bus/pcibus.c:787: HAL: No PCI Resource Adjustment done! Hardware may malfunction

• Unimplemented USB Function: drivers/usb/usbehci/usbehci.c:1155: EHCI_GetRegistryParameters: UNIMPLEMENTED

• USB Pipe Loop: Repeating calls to USBPORT_OpenPipe and USBPORT_USBStatusToNtStatus.

• Driver Failure: Driver 'sacdrv.sys' load failed, status (c0000037)

Steps to Reproduce:

1. Install ReactOS BootCD image to a USB flash drive.

1. Boot from the USB drive.

1. Hit F8 during boot and select setup with screen.
2. Observe the debug output or wait for the system to hang/loop.

Expected Result:

The system should initialize the USB controller and proceed to the desktop or setup menu.

Actual Result:

The system enters an infinite loop of USB port requests and fails to resolve IRQ conflicts, eventually hanging.