What is MEM-LEAK-SYS?
This high-severity issue affects the Windows operating system. A critical system process is consuming available memory indefinitely. The usual suspects are faulty driver (Non-paged pool leak) and buggy background service. Work through the steps below in order.
Common Causes
- Faulty driver (Non-paged pool leak)
- Buggy background service
Step-by-Step Fix Guide
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1
Identify leaky driver using Poolmon
As a first move, Identify leaky driver using Poolmon handles the most common scenario behind MEM-LEAK-SYS.
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2
Update system drivers
If it comes back, the next steps in the sequence are there specifically for atypical windows instability cases.
Commands & Diagnostics
taskmgr
poolmon
Frequently Asked Questions
The leading cause of MEM-LEAK-SYS is faulty driver (Non-paged pool leak), though buggy background service also show up in our reports.
Try "Identify leaky driver using Poolmon" first — it resolves most MEM-LEAK-SYS cases on its own. Only work through the rest of the guide above if it comes back.
MEM-LEAK-SYS is a high-severity error. It won't damage your PC instantly, but repeated occurrences usually point to a deeper problem worth addressing soon.
Usually. MEM-LEAK-SYS is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
Sometimes. Microsoft regularly releases patches that fix known BSOD triggers including MEM-LEAK-SYS. Make sure Windows is fully up to date via Settings → Windows Update before attempting more advanced fixes.
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