a few moths ago I started getting a series of errors in which the graphics on games would break and distort, it was usually followed shortly after by my computer going to a blue screen saying begging dump of physical memory, after trying what i saw as obvious things (i.e updating drivers) for no apparent reason it seemed to stop, after not doing anything major in the way of changing my pc it seems to have started happening again but at more regular intervals (both the graphical errors and the dumping of physical memory). I've got to the point where I am genuinely unsure of the right course of action and any help would be greatly appreciated.