18/09/2026
🚨 “OPERATING SYSTEM NOT FOUND” — What’s Causing It? 💻⚠️
Turned on your PC and Windows suddenly refuses to boot? The Operating System Not Found message means the BIOS/UEFI cannot find a bootable Windows installation.
🔧 Before reinstalling Windows, check these:
✅ Check if the HDD/SSD is detected in BIOS/UEFI
✅ Verify the correct boot order
✅ Remove unnecessary USB drives
✅ Run Startup Repair
✅ Identify the correct Windows partition
✅ Repair the boot files
✅ Run CHKDSK to check the drive
✅ Check the HDD/SSD for signs of failure
💡 Remember: This message does not automatically mean Windows or your drive is gone. Diagnose the boot configuration, partitions, and storage device first.
📌 Save this guide—it could save you from an unnecessary Windows reinstall!
ANIK Digital & Information Technology
Tech Solutions, Better Tomorrow. 🚀