HD2 LOG VIEWER is a professional-grade telemetry utility designed for high-frequency hardware log analysis. Optimized for stability testing, thermal diagnostics, and hardware troubleshooting, it provides an interactive interface for visualizing and diagnosing data from HWiNFO64, GPU-Z, and MSI Afterburner.
Because this utility is packaged using PyInstaller, some antivirus engines may flag the executable as a false positive.
Previously, automated VirusTotal scanning was integrated into the CI pipeline. This has been removed for the following technical and operational reasons:
- Binary size constraints: The compiled executable is large due to bundled dependencies, which makes repeated API uploads inefficient and prone to request failures or rate limiting.
- API cost / quota limitations: Continuous scanning of every build consumes VirusTotal API quota. For a free and frequently built project, this introduces unnecessary operational cost.
- CI overhead: Uploading and polling external scan results significantly increases build time without affecting runtime functionality or binary correctness.
- Each release includes a SHA256 checksum for integrity verification of the distributed archive.
- The project is built deterministically via GitHub Actions, with artifacts generated directly from source.
- Manual VirusTotal scans may still be performed selectively on major releases when required.
This approach prioritizes build stability, reproducibility, and cost efficiency while maintaining basic integrity validation.
- Download: release_release_v1.5.8.zip
- EXE SHA256: EC547B4CC4FB3203B106DB289050373696495D80E44B89C2740DE445DE4C1C02
- Groups JSON SHA256: 3AFEBEF1816D52DF9849EA545282A25887A6B0016D655836E4C7E3C1CAFD1A92
- Manifest SHA256: 34DD6DFF434C28DF636F57BA15DE9A1D7C6066346FC0DA67D37F694503AE4D7A
- ZIP SHA256: 12D0826B60BF4B6F53855C939AD1C2FB08767C92661797AF6BF7B9977E59C08E
- Go to the Latest Release page.
- Download the
HD2_LOG_VIEWER_latest.ziparchive. - Extract the ZIP fully to a folder of your choice.
- Run
HD2_LOG_VIEWER.exe.
Ensure groups.json stays in the same folder as the EXE to load your presets.
Prerequisites:
- Python 3.12
- pip
git clone https://github.com/ERRORX2/HD2-LOG-VIEWER.git
cd HD2-LOG-VIEWER
pip install pandas matplotlib numpy
pythonw HD2_LOG_VIEWER.pyw- Multi-Plot Mode: Split sensors into categorized subplots - temperatures, clocks, voltages, utilization - for side-by-side comparison without overlap.
- Heatmap Mode: Color-coded stress visualization across all selected sensors simultaneously, using absolute thresholds for known sensor types and per-sensor normalization as fallback.
- Ξ Delta Mode: Graph the absolute difference between sensor values over time - useful for tracking GPU core vs. hotspot spread or VRM thermal delta.
- Time Mode: Switch the X-axis between raw polling ticks and actual elapsed time when a timestamp column is detected.
- Interactive Tooltip: Hover over any point on the chart for a synchronized readout of all plotted sensors at that exact moment.
- Signal Event Timeline: A dedicated timeline strip below the chart marks where hardware anomalies were detected. Click any marker to jump directly to that moment and see what triggered it.
- Chart Export: Save the current view as a high-resolution PNG (300 DPI) including the full sensor legend, or copy it directly to the clipboard with
Ctrl+C.
- Categorized Sensor List: Sensors are automatically sorted into groups - Temperatures, Utilization, Clocks, Power, Voltage, Fan Speeds - for fast navigation across large logs.
- Live Search: Filter the sensor list in real time by typing; results update instantly.
- Out-of-Spec Filter: One click hides all normal sensors and shows only those currently reading outside safe thresholds, highlighted in the list.
- Sensor Alias System: Permanently rename ambiguous or hardware-specific sensor columns so they are correctly identified across any future log file from the same machine.
- Preset Groups: Save any combination of selected sensors as a named preset. Apply, rename, delete, or share presets via clipboard - paste a shared preset from another user directly into the app.
- Hardware Failure Diagnosis: Runs a full signature scan and presents findings as severity-tagged cards (Critical / Warning / Info) with plain-English descriptions, evidence values, and one-click sensor selection to jump straight to the relevant chart.
- Session Summary Narrative: Automatically generates a plain-English paragraph summarizing the most significant findings and any causal relationships between issues detected.
- Discord Summary Copy: Copies a compact, formatted summary of the session narrative and all detected signals - including severity and evidence - ready to paste directly into Discord or a support ticket.
- Real-Time Signature Badges: The sidebar shows a live count of critical, warning, and info signals as soon as the scan completes in the background, without opening the diagnosis window.
- Out-of-Spec Detection: Independently flags individual sensors that exceed configured thresholds, separate from the full signature engine.
- Detected Hardware View: Parses the CSV label rows to identify and display the actual hardware devices present in the log - CPU, GPU, storage drives, network adapters, and more - grouped by category.
- Reference Baseline: Pin the current session as a reference, then load a second CSV to compare directly against it.
- Overlay Mode: Draws both sessions on the same axes so differences in thermals, clocks, or power are immediately visible.
- Delta Summary Panel: Shows avg/max/min differences between the current and reference session for every selected sensor, displayed as an annotated panel on the chart.
- Swap Reference: Swap the current and reference sessions without reloading either file.
- HTML Report Export: Generates a fully self-contained HTML report including detected hardware, session summary, all signature findings, out-of-spec sensors, per-sensor charts (selected and by category), PSU rail voltages, and a full statistics table. No internet connection required to view.
- 14 Built-in Themes: Dark (Default), Light (Default), Slate, Teal, Forest Green, Crimson, Steel, Lime, Violet, Lavender, Cobalt, Neon Blue, Sand, Monochrome, and the Helldivers 2 theme.
- Theme Editor: Customize any theme's background, surface, border, text, accent, plot line colors, and heatmap band colors using a color picker. Save as a named user theme.
- Import / Export Themes: Share themes as
.jsonfiles. Import a theme file and it is immediately available in the editor. - Persistent Theme: The active theme and all customizations are saved and restored between sessions.
- Limits Editor: Configure every detection threshold - temperature limits per component type, voltage rail safe ranges, power maximums, fan stall thresholds, frametime limits, and all signature-specific sensitivity parameters.
- Signature Controls: Enable or disable individual signatures from the settings panel. The signal timeline and badge counts update accordingly.
- Tooltip Toggle: Enable or disable the hover tooltip from the top bar without restarting.
- Crash Recovery: Automatically trims corrupted or zeroed rows commonly left at the end of logs after crashes or hard resets.
- Update Notifications: Checks for new releases silently on startup. If an update is found, you can open the release page, ignore that specific version, or disable future notifications. A manual check is available via the β³ button at any time.
- Debug Dump: A hidden developer panel (
Ctrl+F8) shows all resolved sensor columns, detected values, fabric clock ratios, PSU rail analysis, and internal state - useful for diagnosing why a signature did or did not fire.
HD2 LOG VIEWER includes an advanced signature detection system that analyzes system behavior across thermals, power delivery, memory stability, storage performance, and OS-level scheduling.
π‘οΈ Thermal & Cooling
- CPU thermal throttling and sustained temperature stress
- GPU hotspot and edge-to-hotspot delta analysis
- VRAM junction temperature throttling
- VRM and MOSFET overheating
- Chipset / PCH thermal throttling
- Fan stall detection during active load
β‘ Power & Voltage
- CPU clock stretching (major and minor) - effective vs. requested clock ratio analysis per core
- GPU power limit saturation and oscillation
- PSU +12V rail sag and ripple analysis
- Multi-rail voltage out-of-spec detection (+12V, +5V, +3.3V)
- Laptop power delivery failure / limp mode detection
- Phantom GPU clock cap detection
𧬠Memory & Fabric
- System RAM exhaustion and virtual memory / pagefile overflow
- VRAM overflow with spillover into system memory
- Ryzen FCLK/UCLK fabric desync (DDR4 and DDR5 modes)
- Memory XMP/EXPO profile disabled detection
- Memory controller clock mismatch
𧩠System & OS
- Hardware (WHEA) errors
- GPU driver TDR / timeout pattern detection
- CPU bottleneck (GPU idle while CPU saturated)
- Background process CPU interference
- GPU priority conflict from background applications
- GPU engine wait bottleneck (PresentMon frame data)
- Kernel driver / DPC latency spikes
- PCIe bus interface chokepoint and signal instability
πΎ Storage & I/O
- Drive I/O bottleneck and sustained 100% activity
- NVMe and SSD thermal throttling
- S.M.A.R.T. hardware failure flags
- SSD lifespan critical and wear warnings
- Pagefile overuse
π§ͺ Meta & Platform
- Sensor alias validation and auto-detection prompting
- Log row integrity and crash-truncation cleanup
- USB rail voltage sag
- Load a Log: Launch the app and select your HWiNFO64 CSV. A spinner dialog loads it in the background.
- Select Sensors: Use the categorized sidebar to toggle sensors, or apply a saved preset. Use the search box to filter by name.
- Analyze: Hover over the chart for a live synchronized readout. Use Multi-Plot, Heatmap, Delta, or Time mode to change the view.
- Diagnose: Click π¬ Diagnose Hardware Signatures to run the full analysis and review any findings. Use π Copy Discord Summary to share results instantly.
- Save Presets: Type a name and click Save to store the current sensor selection. Share it via the clipboard icon next to each preset.
- Export: Save a PNG of the current chart or generate a full HTML report for offline sharing or archiving.
MIT License - Developed for the hardware enthusiast and troubleshooting community.