I just bought a new HP Pavillion with the following RAM inside:
hynix 512MB 1Rx8 PC2-4200U-444-12
There is one extra slot, so I bought off ebay:
hynix 1GB 1Rx4 PC2-3200R-333-12
And it doesn’t work on it’s own or with the original RAM. Can you please tell me where I went wrong? :a I can find out more Hardware info of my PC if needed.