This is not good news. The CapsLock blinking three times indicates a memory failure -- usually a bad memory stick.
But if you've tested that and found it to be OK, then it could also be the memory controller chip on the system board -- and if that has failed, then you are out of luck, as it will cost more to replace the system board than simply replacing the laptop.
You could also TRY replacing the memory stick, just in the off chance that will work -- but buy it from a place that has a good refund policy.
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