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This video demonstrates how to disassemble and clean the Acer Aspire 5749 laptop from dust and replace the thermal grease to reduce the temperature under load to extend its life. Also, the keyboard is removed, so there is information on how to replace it, if necessary. There is also access to RAM and HDD. Also, if necessary, you can use this video to figure out how to add RAM or replace a hard drive or install an SSD to increase the performance of this notebook Acer Aspire 5749.