System error when turned on

• BIOS/UEFI configuration issue
  • If the system can’t find a valid boot drive, it tries to boot over the network (PXE boot). That’s when you see Client MAC address and patent/product messages.
• Missing/Corrupted DMI (Desktop Management Interface) info
  • Sometimes after a motherboard replacement or BIOS reset, system-specific info (like product number, serial number, etc.) isn’t written to the BIOS properly. HP, Dell, and Lenovo systems often throw “Product Information Not Valid” errors in that case.
• Hard Drive / Boot Device issue
  • If your storage drive isn’t detected or has failed, the PC skips to network boot.

How to Fix-

1. Check Boot Order
   • Enter BIOS/UEFI (usually press F2, F10, ESC, or DEL at startup).
   • Ensure your hard drive/SSD is listed as the first boot device, not “Network Boot” or PXE.
2. Reconnect Storage Drive
   • Power off the PC, reseat the HDD/SSD cables (or NVMe drive) to ensure it’s properly connected.
3. Reset BIOS
   • In BIOS, look for “Load Optimized Defaults” or “Reset to Defaults” and save.
4. Check for DMI/Serial Info
   • If the error mentions product patents or product info not valid, it may require reprogramming the system board information (usually only a service center or manufacturer tool can do this).
5. Disable PXE Boot
   • If you don’t use network booting, disable PXE/Network Boot from BIOS.