ReactOS does not boot with Nvidia 182.05 or newer drivers. Nvidia 181.22 and older drivers are working as always (minor graphical glitches and no 3D acceleration).
Here is the link to the last working driver: http://downloads.guru3d.com/GeForce-Forceware-181.22-XP-32-bit-WHQL-download-2168.html
Here is the link to the first not working driver: http://downloads.guru3d.com/GeForce-Forceware-182.05-XP-32-bit-download-2183.html
Intel Pentium 4 2.40A
2GB DDR400 RAM
Nvidia GeForce 8400GS 512MB