Bad_pool_header System Reboots

I haven't installed any new hardware. I go into FSX at Montego Bay airport, using a default aircraft like always, but then after a few minutes of doing my usual routine of opening up gauges and views I get the dreaded screen "bad_pool_header...BC code 19" and the system reboots. It was working fine a few days ago, I just don't understand this. Is there a resolution to this?EDIT: I tried doing a system restore and I noticed some software was installed onto my computer yesterday, maybe that caused the crash? Well I restored my system to the 6th December and I tried FSX again, *touch wood* it is working, I went through my routines and actually took off from the runway.