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Compaq Presario CQ57-310US - AMD E-300 1.3 GHz - AMD VISION - Win 7 Home Premium 64-bit - Radeon HD 6310 - 2 GB RAM - 250 GB HDD - DVD SuperMulti - 15.6" HD BrightView 1366 x 768 (HD) - black - Walmart.com
Compaq Presario CQ57 Accessing the Hard Drive and RAM - YouTube
A-Tech 4GB RAM for COMPAQ PRESARIO CQ57-250SV | DDR3 1066MHz SODIMM PC3-8500 204-Pin Non-ECC Memory Upgrade Module at Amazon.com
CMS 2GB (1X2GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Compaq Presario Cq57-319Wm, Cq57-310Us, Cq57-314Nr Ddr3 - A48 at Amazon.com