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HP Pavilion dv4-2045dx RAM Replacement - iFixit Repair Guide
Amazon.com: A-Tech 8GB (2 x 4GB) RAM for HP Pavilion DV4-1120US | DDR2 800MHz SODIMM PC2-6400 200-Pin Non-ECC Memory Upgrade Kit : Electronics
HP Laptop Pavilion Intel Core 2 Duo T5800 (2.00GHz) 4GB Memory 250GB HDD Intel GMA 4500MHD 14.1" Windows Vista Home Premium 64-bit dv4-1120us - Newegg.com
Seifelden 16GB (2X8GB) Memory RAM for HP Pavilion DV4-5113CL Laptop Memory Upgrade - Walmart.com
HP Pavilion dv4-2045dx RAM Replacement - iFixit Repair Guide
How to remove the ram on an HP Pavilion DV4 Laptop - YouTube