LDI12 Diagnostic is the tool I carry to repair jobs: one portable executable on a USB stick, no installer, no account, nothing to configure.
Thirty-nine probes read the machine (hardware, storage and SMART, Windows, network) and one hundred and forty-nine rules turn that into plain sentences. A quick pass takes ten seconds, a full one takes two to four minutes. It then writes three documents: a detailed technician report, a jargon-free summary for the customer, and a JSON snapshot so two visits can be compared.
One rule decided the rest: never state what was not measured. A value that could not be read is shown as missing, with the reason. A check that could not run is excluded from the score instead of lowering it.
Seventeen repair operations are available, from flushing the DNS cache to backing up user folders. Each one shows the exact command, what it changes and what it will not touch, before anything runs.
Interface and reports are in French. Windows 7 SP1 to Windows 1
Features
- Single portable executable, 12.4 MB, no installation
- 39 probes: hardware, disks and SMART, Windows, network
- 149 rules, scored per domain with the confidence attached
- Missing measurements are shown as missing, with the reason
- 17 repair operations, each previewed before it runs
- Technician report, customer summary and JSON snapshot
- Before and after comparison of two diagnostics
- Live monitoring, cleanup with file list shown first
- Works offline: no account, no telemetry, nothing sent
- Runs as a standard user; elevation only where needed
- Windows 7 SP1 to Windows 11, x86, x64, ARM64 emulated
- French interface and reports