MemTest86
MemTest86 is a free memory diagnostic tool developed by PassMark Software. It runs independently of any operating system from a bootable USB drive, allowing accurate detection of RAM errors. MemTest86 supports the latest UEFI firmware and provides detailed test reports, helping users identify faulty memory modules before they cause system instability, crashes, or data corruption.
The Free Edition includes comprehensive memory testing, error logging, and support for modern DDR4/DDR5 modules. Pro and Site Editions add advanced automation and reporting features, but for most users the Free version is sufficient to verify memory stability and detect hardware faults.
Key features:
- Bootable USB Testing — runs outside the OS for reliable results
- UEFI Support — fully compatible with modern systems
- Comprehensive Memory Checks — multiple algorithms to find hidden errors
- Error Logging — detailed reports for diagnostics and support
- Free Edition — powerful enough for home and professional use
Download Options
| Version | Type | Download |
|---|---|---|
| Free Edition | Bootable USB (.zip) | Download |
Useful Links
- Official Website
- License: Free (Pro & Site Editions available)
Note: Always back up important work before running hardware diagnostics. Faulty RAM may cause system instability or data loss.