Can i upgrade my hp 530 notebook's CPU processor graphic card and hard drive?

yes if you have a celeron CPU you can upgrade to highter rated celeron's but to a max of 667mhz bus speeds. as for c2d CPU's again providing you keep with the 667mhz bus range the sky is the limit ! mine was a t2700 which i upgraded to a t7600 ! i have also upgraded my memory from 1gig 800mhz to 4gig 800mhz biOS sees new CPU and memory correctly and set them correctly