What is RAM-NOT-DETECTED?
RAM-NOT-DETECTED shows up as a critical-severity system memory (RAM) fault. Motherboard doesn't recognize RAM - reports low memory or won't boot. Typical causes include module incorrectly inserted, oxidized contacts and defective DIMM slot. Follow the steps below to fix it.
Common Causes
- Module incorrectly inserted
- Oxidized contacts
- Defective DIMM slot
Step-by-Step Fix Guide
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1
Transplant the RAM
Transplant the RAM tends to be the quickest win here, addressing the most typical cause of RAM-NOT-DETECTED.
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2
Clean the contacts with the eraser
Where the fault comes back, look to the later steps — they're built around uncommon ram instability triggers.
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3
Try a different DIMM slot
"Try a different DIMM slot" targets defective DIMM slot, one of the documented causes of RAM-NOT-DETECTED.
Commands & Diagnostics
No specific commands required for this error. Follow the step-by-step guide above.
Frequently Asked Questions
RAM-NOT-DETECTED is most often triggered by module incorrectly inserted. Other reports point to oxidized contacts and defective DIMM slot as contributing factors.
The fastest fix is "Transplant the RAM". Only move on to the later steps if RAM-NOT-DETECTED keeps coming back.
RAM-NOT-DETECTED is rated critical severity in our database. It's worth acting on quickly rather than letting it recur.
In most cases, yes — the guide above resolves RAM-NOT-DETECTED without a clean install. Treat a reinstall as the last resort, not the first move.
MemTest86 is strongly recommended if RAM-NOT-DETECTED 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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