I have a laptop that was stable for 18 months, then started crashing with increasing frequency. Booted in to memcheck and the memory was faulty. Replaced it and

I have a laptop that was stable for 18 months, then started crashing with increasing frequency. Booted in to memcheck and the memory was faulty. Replaced it and the crashes went away. Not saying it's definitely the cause, but strongly suggest you check if you haven't yet. It doesn't take long.