i currently have 1 memory 512Mb and i bought another one the same as of the old one, but after i installed it, turned on but crashes whle starting up wndows. now, when i turn it on, the monitor only says “please chaeck video cable”. i tred swapping the 2 RAMs but same result. i tried to remove the new one but its still not workin. im a student please help me. tnx guys