That kernel power event ID 41 error occurs when the computer is shut down, or it restarts unexpectedly, IMO. When a PC that is running Windows starts, a check is performed to determine whether the computer was shut down cleanly. If the computer was not shut down cleanly, a Kernel Power Event 41 message might be generated.
An event 41 is used to report that something unexpected happened that prevented Windows from shutting down correctly. To determine what may have happened and to identify a potential resolution, it is important to know what the computer was doing at the time just before the event occurred.
If event 41 is logged because power to the computer was interrupted, consider obtaining an uninterruptible power supply (UPS) such as a battery backup power supply. An underpowered or failing power supply may cause this behavior. For example, if you added RAM or additional devices or hard disks when this problem began, the power supply may cause issues.
Which Power supply do you have ? Try changing the POWER settings in Windows OS. But I think this Kernel-Power critical error is usually power-related, and indicate something wrong with the computer's PSU (Power Supply Unit). Oxidation on the back of the PSU switch might be the cause. In this case, contact a technician to check the PSU, as replacing it could solve the problem.
Another possible reason for this critical error is overheating. Computer usually shuts down when the temperature was too high ?