Right now I have a PQI 512mb stick that i bought off ebay about 8 months ago and i think its been really acting up. First, steam kept giving me this error that it couldnt read from a memory location due to access violations. Then the hp apps starting erroring out similarly (memory access errors). Also, my compute has been running kind of slow, especially when I try and open applications. When I open firefox it can take almost a minute to open. Does this sound like memory? Thanks.