Check if you can get momory for your laptop in crucial (good price and service) click here, if you cannot get there and try HP. You may not able to get memory for some laptop if HP use their own special memory
Be careful with this because often you will find that the mobo will take more memory but the current configuration means all the existing slots are full so you have to replace and not just add to your existing meory.
Crucial normall have all this information on their site and provide excellent service. If you have any doubts give them a call as they normally know their sutff.
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