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HP Recommended
Compaq Evo D3D
Microsoft Windows XP

Hello, I recently changed hard drives in an old Compaq Evo D3D desktop and when I switched it on it gives me *1801-Microcode Patch Error* Missing or Invalid Processor Microcode Patch. Please contact Compaq Computer Corporation for a new Rom Bios to support the new Processor Stepping. The following are the properties of the CPU:

Processor / Chipset

  • CPU
    Intel Pentium 4 2.53 GHz
  • Data Bus Speed
    400 MHz
  • Chipset Type
    Intel 845G
  • Processor Socket
    Socket 478

Cache Memory

  • Installed Size
    L2 cache - 512 KB Advanced Transfer Cache
  • Cache Per Processor
    512 KB
  • Type
    L2 cache
  • Per Processor Size
    512 KB
  • Installed Size
    512 KB

RAM

  • Memory Speed
    266 MHz
  • Memory Specification Compliance
    PC2100
  • Technology
    DDR SDRAM
  • Installed Size
    256 MB
  • Rated Memory Speed
    266 MHz
Graphics Controller
  • Form Factor
  • integrated
  • Interface Type
  • AGP 4x
  • Graphics Processor
  • Intel Extreme Graphics shared video memory (UMA)
  • Video Interfaces
  • VGA

Mainboard

  • Processor Socket
    Socket 478
  • Data Bus Speed
    400 MHz
  • Chipset Type
    Intel 845G

How do I resolve the issue? 

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