I have an a7n8x rev2.00. the cmos does not keep the biso settings although I have a new batterie. I am not sure if all jumpers are on the right place and would like to find the right manual.

<span><span>Clear using jumper (recommended)</span><br /> <p><b>Precaution:</b> When inside the computer please be sure you're aware of the potential damage that can be caused by <a href="http://www.computerhope.com/esd.htm">ESD</a>.<br /> <p><img src="jumper.jpg" />On the computer <a href="http://www.computerhope.com/help/mb.htm">motherboard</a> locate the BIOS clear / password <a href="http://www.computerhope.com/help/jumpers.htm">jumper or dipswitch</a> and change its position. This jumper is often labeled CLEAR, CLEAR CMOS, JCMOS1, CLR, CLRPWD, PASSWD, PASSWORD, PSWD or PWD as shown in the picture to the right. To change the jumper simply remove it from the two pins its currently on so that it covers the pin that is not covered. For example, in the picture to the right pins 1 and 2 are covered, you'd remove the jumper and put it on pins 2 and 3.<br /> <p>Once this jumper has been changed, turn on the computer and the password should be cleared. Once cleared, turn the computer off and return the jumper or dipswitch to its original position.<br /> <p>The location of the jumpers or dipswitches are dependent on the manufacturer of the computer and motherboard. However, below are some general ideas on where to find it. Remember that most motherboards could have dozens of different jumpers, make sure you're changing the CMOS jumper and not something else. If these general suggestions do not help refer to your motherboard / computer documentation or skip to the next step.<br /> <ol> <li><b>On the edge of the motherboard</b> - Most jumpers are located on the side of the motherboard for easy accessibility, verify by looking at all visible edges of the motherboard.</li> <li><b>By the CMOS battery</b> - Some manufactures will place the jumper to clear the CMOS / BIOS password by the actual <a href="http://www.computerhope.com/jargon/c/cmos.htm">CMOS</a> battery.</li> <li><b>By the processor</b> - Some manufactures will place the jumpers by the processor of the computer.</li> <li><b>Under the keyboard or bottom of laptop</b> - If you are working on a <a href="http://www.computerhope.com/jargon/l/laptop.htm">laptop computer</a> the location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment.</li> <li><b>Other visible location</b> - While it is possible that the jumpers / dipswitches may not be in a visible location, most manufactures try to make things easier by placing the jumpers / dipswitches in another visible location.</li></ol><span>Remove CMOS battery</span><br /> <p><img src="cmos.gif" />Removing the CMOS battery like the one shown in the picture to the right will cause the system to loose all CMOS settings including the password. To do this locate and remove the <a href="http://www.computerhope.com/help/cmos.htm">CMOS battery</a> on the<a href="http://www.computerhope.com/help/mb.htm">motherboard</a> for at least five-minutes. After this has been done put the battery back into the computer and turn it back on.<br /><span>Jump the CMOS solder beads</span><br /> <p>Older computers and especially older laptops don't have jumpers or dipswitches and require the user to jump a pair of solder beads on a circuit board. The identification and location of these solder beads can vary and if not available in computer documentation is only obtainable through the computer manufacturer.<br /> <p>If you've identified the solder beads they can be jumped by placing a flat-head screwdriver over the two beads and leaving it on those beads while turning on the computer. Once the computer has booted turn off the computer and then remove the screwdriver.<br /></span>