Can memory and graphics be added to my son's HP pavilion slimlin
s7500y. He likes to play WOW and Half-life and says his computer lags. We did not know if we should buy a new computer or try and upgrade this one..if possible.
After doing further research on your computer I have to say they built that one not to be upgraded. There is one PCI expansion slot. PCI graphics cards are not many and not powerful. The best thing to do is to build a new PC.