Hp Compaq presario c500 laptop that is not booting into windows vista. | Received a HP Compaq presario c500 with a problem booting into windows vista along with some virus issues. The
OFFTEK 1GB Replacement Memory RAM Upgrade for HP-Compaq Presario Notebook C500 (CTO) (DDR2-4200) Laptop Memory at Amazon.com
Upgrading a Compaq C500 and checking motherboard type - YouTube
2GB 2X1GB RAM Memory for Compaq Presario C500 Series Presario C509NR Black Diamond Memory Module DDR2 SO-DIMM 200pin PC2-5300 667MHz Upgrade - Walmart.com