For about 3-4 days ago, I started my computer and after bios this error came "Chassis intruded. Fatal error... System held" I wanna know what that error is... but I solved the problem by removing the "bios-battery/clock battery" on the motherboard, and then it stopped but I wanna prevent this from happening again, so help me with this... "Chassis intruded. Fatal error... System held"... need help nuFF3

I'd check the manuel for your board and disable the chassis intrusion in the bios. There may be a jumper you need to change on the board. Likely I want to go like my grandfather did. Peacefully in his sleep. Not screaming at the top of my longs like the passangers in his car.

In addition to the above I would wonder why this message appeared even if the setting is enabled in the BIOS. I would think that someone had to remove a cover from the case. If it wasn't you, then you may want to figure out who it was. Also, removing the battery resets ALL the BIOS settings to defaults. You need to enter the BIOS and reset the date & time, boot order, and possibly other values, like integrated hardware, etc.

There's probably a switch on the chassis that activates when the cover is removed. Find it and follow its leads to the motherboard and then pull them off. A lot of the old Dells were that way and that's all you had to do to stop the intrusion message.