No guarantees, I'm far from a computer guru......
Hopefully it is not a motherboard problem.
I would first try to rule out any virus or malware problems.
IF you can start up in safe mode with networking, go online and download a great FREE program Malwarebytes.
I think it's Malwarebytes : Free anti-malware, anti-virus and spyware removal download but you may need to Google it.
Let it do a full system scan while in safe mode, hopefully it finds the problem.
Like I said, I'm not a computer tech, but ruling out any of these problems may help determine if it is/isn't a hardware problem.
Depending on the age of the laptop, Sony may stand behind it. If you have another computer, I'd get on it and Google your computer model and memory dump problems to see if there are any known issues with that model.
May not do much good, but that's all that I know to do.
Good luck with it Bro!