Swap them if the error persists. Windows XP only requires 64MB to 128MB of RAM to install, so even a small old stick will work for the setup process. A Note on Modern Usage
The string msdlg874fon is typically associated with or dialogue box rendering during the early stages of the Windows Setup (the "blue screen" portion of the installer). When the installer cannot call this specific resource, it usually hangs or throws a fatal STOP error. This is commonly caused by: msdlg874fon windows xp free 101 install
If the error persists at random intervals, your system memory might be the issue. Swap them if the error persists
While getting Windows XP running is a fun nostalgia project or necessary for legacy industrial software, remember that it is for modern internet browsing. If you manage to bypass the msdlg874fon error and finish your "101 install," avoid entering personal banking details or connecting it directly to a modern home network without a robust hardware firewall. When the installer cannot call this specific resource,
Restart your computer and enter the (usually F2, Del, or F12). Look for SATA Configuration or Storage Mode . Change the setting from AHCI to IDE or Compatibility Mode .
Use a tool like (older versions) or WinToFlash to burn your XP ISO to a thumb drive.