When you encounter an error message that says, Chassis Intruded…Fatal Error…System Halted on your monitor then it indicates that the Chassis or the cabinet that holds the CPU, GPU, motherboard, and many more is open. It is a security feature offered by OEMs wherein a connector that is found in the motherboard can detect if the chassis component has been replaced or removed. There are a few OEMs that offer onboard speaker or PC chassis speaker which goes off in this kind of situation.
Obviously, the problem has something to do with the hardware and in most cases, you have to put the jumper back on the motherboard with the pin-labeled chassis signal and ground. There are times when some OEMs offer a simple switch that is armed automatically when you properly close the chassis. Thus, you need to check if this switch has something to do with the error. If there is no switch or if it doesn’t resolve the issue, although you may be able to get into Windows with a warm boot, the normal Windows boot won’t really work unless you fix the problem. It is rather false positive and has something to do with the RTC RAM state or the BIOS. You might need to completely disable the Chassis intrusion feature to fix the error.
Refer to the suggestions given below to try and fix the “Chassis Intruded, Fatal Error … System Halted” error.
Option 1 – Try to clear CMOS
You can easily clear CMOS by shorting two pins which can be found side by side on the motherboard. Keep in mind that it may vary from OEM to OEM although the basics are still the same to clear CMOS. In addition, you might also have to download the manual from the OEM’s website so that you’ll know its exact location.
Option 2 – Try booting into the BIOS
You can also try booting into the BIOS. All you have to do is tap either the DEL or F2 keys to get there. Note that everything will be set back to their default setting after you reset the CMOS.
Option 3 – Try disabling Chassis intrusion
In this option, you have to look for the Chassis intrusion feature in your BIOS. It might be located under security. From there, disable it and check if the problem’s fixed.
Option 4 – Try to reconfigure the BIOS
Once you have disabled the Chassis feature, you need to reconfigure the BIOS the way you expect it to be or to what it was before the reset.