I`ve done a normal formate, but I am getting the message "chassis intruded", what to do?

Hello, you can download a manual here:

http://www.asus.com/Motherboards/Intel_Socket_775/P5PEVM/#download

Please select your windows version.
Select manual and click on global for download.
Unzip the file before installation.

And remove the cable on the mainboard for the contact on the chassis.
When that is done enter the bios and set the setting for the chassis intruder to off
Read about that in the manual.
The chassis intruder is used by admins to see if the case have been opened
when the case is opened the bios will block the system from booting until the setting in the bios
is set back to normal.

First, turn off your computer, disconnect all cables.
Then, find the manual for this particular motherboard - locate in it where the "chassis intruder jumper" is. Then move the plastic jumper from pins 1 and 2 (left) to 2 and 3 (right). Keep them there for 10 seconds, then move the plastic piece back to pins 1 and 2. This should fix the problem.
Hope that helps! :)

You can go into the BIOS configuration and reset the chassis detection.

The NRL_LS has a connector for a microswitch on the case, to detect if the case is opened.
Look for jumper J2, between the battery and the bios chip, at one end of a long connector CON1.
There should be 2 adjacent bare pins at one end of J2.
Place a jumper block on them, and the system should start normally.

The manual is here +NRL-LS Cover.P65 - ftp.asus.com.tw

Look at item 9 on page 2-22, referring to jumper J2

theres many possibilities.... first check if loose connection of cables... also if it helps you might have to jumper hdd ...
and also try replacing cmos battery lastly make sure the chassis sensor button is pressed down when closin lid...

When you open the computer case, a switch is tripped and after the case has been closed and the computer boots up, you get this chassis intruded message.
To clear this message go to the BIOS configuration and then to the chassis intruder detect and then Reset this setting.

Chasis intruder is a warning that your CPU has been opened by someone
it is normally used to warn you against unautorized BIOS or SYSTEM PASSWORD removal
There is a switch in your casing that detects this.

Leave this setting to enabled (recomemded)

Thanx and i hope this info is helpfull
Please dont forget to rate this solution

That message means that the side panels of the case of the computer are not closed. You need to replace the side panels if you removed them. And, if you did not, you have a bad intrusion switch. The switch tells the computer that the side panels are open or removed completely. Make sure you screw them back in completely as well.

Do you mean the pins for the chassis intrusion on the board are broken off?
if not broken then just jumper them and bypass the switch.

Try disabling this feature in the BIOS. Here is a link to the manual.

Best of Luck,

Spare head 2