BzMiner vs Competitors: Which Miner Should You Choose in 2026?

Troubleshooting BzMiner: Fix Common Errors Fast

BzMiner is a popular GPU miner but can run into issues that interrupt hashing or reduce performance. Below are the most common errors, quick diagnostics, and step-by-step fixes to get you mining again fast.

1. Miner Won’t Start / Crashes Immediately

Symptoms: Miner window opens then closes, or process exits with no output.

Fix:

1. Check driver compatibility: Update GPU drivers to the recommended version for BzMiner (NVIDIA: use latest stable Game Ready or Studio drivers; AMD: latest Adrenalin). Reboot after install.
2. Run from command line: Open a terminal/PowerShell and start BzMiner to view error messages. Example:

   Code
   Copy CodeCopied
   bzminer.exe –config config.json 

3. Missing dependencies: Install required runtime libraries (Visual C++ Redistributable for Visual Studio, CUDA runtime for NVIDIA). Reboot.
4. Config syntax errors: Validate JSON or CLI flags. Use a JSON linter for config files.
5. Permissions/antivirus: Temporarily disable antivirus or add BzMiner to exclusions. Run as administrator.

2. “GPU Not Found” or Zero GPUs Detected

Symptoms: Miner reports no GPUs or lists fewer than expected.

Fix:

1. Driver reinstallation: Reinstall GPU drivers with clean install option.
2. Check hardware recognition: Confirm OS detects GPUs (Device Manager on Windows, lspci/nvidia-smi on Linux).
3. PCIe/rescan issues: Reseat GPUs and power connectors; for systems with risers, test direct connection.
4. BIOS settings: Ensure Above 4G Decoding and PCIe settings are enabled for mining rigs.
5. Compatibility flags: Use any required BzMiner flags for specific cards (consult release notes).

3. Low Hashrate Compared to Expected

Symptoms: Hashrate significantly below benchmark or published hashrate.

Fix:

1. Check clocks and power limits: Restore factory clocks, test at stock, then tune. Use vendor tools (MSI Afterburner, AMD WattMan).
2. Thermal throttling: Monitor GPU temps; increase fan curve or improve case airflow. Clean dust.
3. Driver/CUDA version mismatch: Try the driver/CUDA combinations recommended in BzMiner changelog.
4. Incorrect intensity or algorithm settings: Revert custom tuning to defaults; test one GPU at a time.
5. Background processes: Close other GPU-intensive apps and Windows overlays (e.g., GeForce Experience overlays).

4. Frequent Disconnects or Rejections on Pool

Symptoms: Miner connects but frequently disconnects or shares are rejected.

Fix:

1. Pool address/port: Verify you use the correct pool URL/port and protocol (stratum/ssl).
2. Network stability: Test ping and packet loss to pool server. If unstable, switch to a closer pool server or enable keepalive options.
3. Worker credentials: Confirm wallet address and worker name are correct.
4. Share difficulty mismatch: Let the miner auto-negotiate or set recommended difficulty for your GPU.
5. Firewall/NAT issues: Allow outbound connections on the pool port, enable UDP/TCP as required.

5. High Power Usage or Overheating

Symptoms: High wattage draw, GPU temps >85°C, or system shutdowns.

Fix:

1. Lower power limit: Reduce GPU power limit in vendor tools (start at -10% then tune).
2. Adjust core/mem clocks: Undervolt core and increase memory clocks only as needed for algorithm.
3. Improve cooling: Add fans, reposition GPUs, and clean heatsinks.
4. Check ambient temp: Keep room temperature below 30°C if possible.
5. Replace thermal paste/pads: For older cards, consider reapplying thermal materials.

6. Error Logs Show “Out of Memory” or Allocation Failures

Symptoms: OOM errors, failed buffer allocations.

Fix:

1. Reduce batch size/threads: Lower per-GPU workload in config.
2. Use proper driver: Some driver versions handle memory differently; switch to recommended driver.
3. Close other apps: Free VRAM by closing browsers, remote desktop sessions, or overlays.
4. Enable large page support: On Linux, enable hugepages; on Windows, ensure system has sufficient virtual memory.

7. Strange Algorithm or Version Mismatch Errors

Symptoms: Miner reports unknown algorithm, invalid option, or deprecated flag.

Fix:

1. Update BzMiner: Download the latest release and read the changelog for breaking changes.
2. Adjust config options: Replace deprecated flags with current equivalents shown in documentation.
3. Match algorithm name to pool: Ensure you selected the exact algorithm string the pool expects.

Quick Diagnostic Checklist (do this first)

1. Run Bz