Multiple BSOD At Random Times With Multiple Drivers Identified?

I am trying to get my wife's new computer up and running without any BSOD or program failures. Note that the system was not initially set up to capture the dmp files so all the earliest ones are missing. I presented the initial problems to the original seller who recommended sticking with MSE and uninstalling Norton 360 and I did that. Another forum suggested that Virtual Memory was the problem and I disabled and restored VM. Still having multiple crashes and I am hoping that I can get real help here. I do note that all the crashes have ntoskrnl.exe in the driver stack although sometimes alone and sometimes with other drivers.[CODE]