Recently my PC began shutting down after several hours. I have Windows 7 Home. When rebooting, the prompt said:
"Your system's firmware did not preserve the system memory map across the hibernate transition. If you proceed with resume, your system could behave in an unexpected manner. It is recommended that you save all your data and reboot the system after resume finishes. Kindly recheck for a firmware update with your system vendor as it may fix this problem."
Why is this happening and what do I do about it?