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I have an alien ware by Dell laptop 2 or three years old , I plugged it in hit the alien head power button and it beeps 4 times then pauses and repeats

4 beeps is a RAM issue. Open up the laptop’s RAM compartment and reseat the RAM. i.e. Take them out and put them back in or switch slots. If you need specific instructions on how, provide your model number and we can help more.