10 Flashes generally means an issue with memory or motherboard.
Your best troubleshooting will be to use one memory module in one slot and then the other slot testing the module and slots in this way, then doing the same with the other memory module if you have one.
Also try and make certain the module is seated fully. An improperly seated module can cause a variety of issues and this error to appear also.
All of this being said if memory does not correct the problem then it is likely a MotherBoard issue.
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