What is MEMTEST-ERR-8?
MEMTEST-ERR-8 shows up as a critical-severity system memory (RAM) fault. Memory diagnostics detected a hardware defect in the memory cell. Common triggers are different modules in one board, poor quality CPU controller, frequency too high and dust in slot. Use the steps below to track down and fix the cause.
Common Causes
- Different modules in one board
- Poor quality CPU controller
- Frequency too high
- Dust in slot
Step-by-Step Fix Guide
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1
Disable XMP profile in BIOS
The highest-success first step is Disable XMP profile in BIOS, which targets the most common trigger behind MEMTEST-ERR-8.
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2
Clean the RAM contacts with a school eraser
Repeat occurrences typically trace back to less obvious ram instability factors, addressed in the steps ahead.
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3
Update BIOS for better compatibility
Still seeing MEMTEST-ERR-8 after that? "Update BIOS for better compatibility" is the next thing to check.
Commands & Diagnostics
mdsched.exe
wmic memorychip get capacity
Frequently Asked Questions
Different modules in one board accounts for the majority of MEMTEST-ERR-8 reports; poor quality CPU controller, frequency too high and dust in slot come up less often but are documented.
"Disable XMP profile in BIOS" clears up most MEMTEST-ERR-8 reports by itself. The remaining steps above cover what's left.
MEMTEST-ERR-8 is rated critical severity in our database. It's worth acting on quickly rather than letting it recur.
Usually. MEMTEST-ERR-8 is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
MemTest86 is strongly recommended if MEMTEST-ERR-8 occurs repeatedly. It runs overnight and tests all RAM slots independently. Even a few errors in MemTest indicate faulty RAM that should be replaced.
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