hello i know you havn't heard from me for a while but after all the advice i received last time i didn't have any more problems for you, but as you can guess i am having more problems. We have recently added more ram going from 128 mg to 640mg after adding 512mg and combining it with old ram. but since then our dvd writer won't write dvd's, it will copy disc from disc and it will burn cd's but not dvd's, we replaced the dvd writer thinking that was what the problem was but after installing the new dvd writer its still not burning dvd's we have also noticed that when its supposed to be burning there is flashing light and you can eject the disc tray? does any one know what could be causing these problems and what could fix it all help appreciated.