| Source | Safety | Notes | |--------|--------|-------| | | ✅ Official | Enter your serial number for the correct version | | Microsoft Store | ✅ Official | "HP PC Hardware Diagnostics for Windows" | | HP Support Assistant | ✅ Official | Installs via the app |
If you are looking for printer diagnostics, the tool is different: hp diagnostic tool download
(Highly recommended if the PC won't start): Download the UEFI executable on a working computer. | Source | Safety | Notes | |--------|--------|-------|
⚠️ Many third-party sites offer "HP diagnostics" but bundle adware or malware. Always download from HP directly. hp diagnostic tool download