Mini PC Journal : How to Fix PC that won't post after ram upgrade
I had a look at a Mini PC today that refused to start after a RAM upgrade. The power light came on, the fan spun for a few seconds, but there was no display. It is the kind of problem that makes you wonder whether the new memory is faulty or something else went wrong during installation.
The first thing I would check is whether the RAM is seated properly. SO-DIMM modules need to enter the slot at an angle before you press them down until the side clips lock into place. Even a slightly loose connection can prevent the system from completing its startup checks.
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I would also avoid assuming that a higher capacity module will work simply because it fits. Mini PCs have specific limits for memory generation, capacity, speed, and chip density. A DDR5 module that works in one model may not be supported by another.
A useful test is to remove the new RAM and reinstall the original module. If the Mini PC starts normally, the problem is likely related to compatibility or the installation. If you installed two modules, try starting with one at a time. Test each slot separately if the model supports it.
Some systems also take longer to complete their first memory training after a DDR5 upgrade. Give the machine a little time before interrupting the process.
If nothing works, check the manufacturer's BIOS update notes and memory specifications. I would also inspect the slot for dust or visible damage.
The main lesson is simple. Keep the original RAM until the upgrade is confirmed stable. It makes troubleshooting much easier and saves unnecessary spending on replacement parts.
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