Asus P5n-d Cmos Checksum Error
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activation email? 1 Hour 1 Day 1 Week 1 Month Forever Login with username, password and session length Forum only search News: Home Help Login Register Computer Hope » Hardware » Hardware » CMOS checksum error- Defaults loaded on startup, partial keyboard control « previous next » Print Pages: [1] Go Down Author Topic: CMOS checksum error- Defaults loaded on startup, partial keyboard control (Read 6940 times) 0 Members and 4 Guests are viewing this topic. wrad3Topic StarterStarter Experience: Familiar OS: Other CMOS checksum error- Defaults loaded on startup, partial keyboard control « on: January 28, 2013, 06:39:45 PM » On startup, my computer gives me the CMOS checksum error- Defaults loaded. I can press f1 to continue and DEL to enter setup, https://vip.asus.com/forum/view.aspx?board_id=1&model=P5N-D&id=20101023071856667&page=1&SLanguage=en-us but my keyboard with a ps2 connection has partial control with only the delete, escape, scroll lock, and numblock keys working, at least to my knowledge. I can press delete to get into the bios, but i cannot control anything from there. I have also tried another keyboard with a usb connection and got the same results meaning that the problem does not lie with the keyboard.To fix the problem, i have replaced the bios battery and also http://www.computerhope.com/forum/index.php?topic=135602.0 reset the CMOS using the jumpers. This obviously didnt work as i would not be posting this. I know that if i can somehow communicate with the bios, i can set it to stop "halt on error".I am currently using a p5n- d ASUS motherboard and from what ive read my other specs shouldent be necessary, though if you would like them i will gladly provide them.Please offer any suggestions before I consider replacing the motherboard. Logged Geek-9pmMastermind Geek After DarkThanked: 837 Computer: Specs Experience: Experienced OS: Windows 7 Re: CMOS checksum error- Defaults loaded on startup, partial keyboard control « Reply #1 on: January 28, 2013, 06:46:13 PM » Stop fooling with the keyboard or you will damage it. The default settings for your motherboard gos for the standard PS/2 keyboard.Don't use a reset switch, if you system has one. You must power off fully and power on to start the BIOS power on self test.Make sure you put the battery in the right way. The right battery is a 3 volt battery. Logged wrad3Topic StarterStarter Experience: Familiar OS: Other Re: CMOS checksum error- Defaults loaded on startup, partial keyboard control « Reply #2 on: January 28, 2013, 06:51:34 PM » Whoops, I did not do all the reseting in one sitting. I made sure to turn the power off, unplug the power cord, hold power button, and take measures
the CMOS Checksum Bad Error, hence they can be handled effectively. The Error Explained A checksum is computed as an error detecting code to guard the BIOS settings stored in the CMOS memory. The CMOS Checksum Bad Error is an error that http://www.tech-faq.com/cmos-checksum-bad-error.html occurs when the CMOS values turn out to be incorrect. The CMOS memory stores a specific value normally to guard the BIOS software. Each time the computer is booted, this value, which is a number is checked against the stored value in http://www.ifmdb.com/ScJtx77t-cmos-checksum-errors-on-two-different-motherboards.html the CMOS memory. If these two values are different, it causes a CMOS Checksum error message. If these values are the same, the computer boots normally. Each computer usually deals with the CMOS Checksum Bad Error differently. Some computers warn the cmos checksum user and continue to boot up using settings in the CMOS, while other computers might warn the user and use the default settings in the BIOS as the correct settings and carry on with a normal boot or reboot. Usually, the strategy the computer employs is stated in the error message. Causes of CMOS Checksum Bad Error There are usually three main reasons that a CMOS Checksum Bad Error occurs. They include: CMOS Battery may not be functioning properly. The battery life may cmos checksum error have expired. The user or a virus may have updated the BIOS. The computer may not have been shut down properly e.g. shutting off the computer's main power without first shutting down the computer (MS Windows requires the computer to be shut down before the power is shut off). Solutions to CMOS Checksum Bad Error The CMOS Checksum Bad Error can be fixed easily by following the listed steps carefully. CMOS Battery May Not be Functioning Properly If the user suspects that the CMOS battery is not functioning properly, he/she can easily change it. Before changing the battery, reboot the computer to make sure that the error still exists. If it does, go into the CMOS and write down all of the settings. If all the settings are lost, they can usually be retrieved from the computer manufacturer. Now locate the battery and remove it. Consult the computer manual or technical support to remove your battery (the battery is flat, shiny silver colored, and coin-shaped) if needed. Take down the CMOS battery’s information such as volt, size, etc. Replace the old battery with a new one and reenter the CMOS settings. If the battery caused the CMOS Checksum Bad Error, the problem should be solved. The BIOS May Have Been Updated If the BIOS was recently updated, the CMOS settings may have reset. Make sure that the values entered in the BIOS are correct or simply reset them to the default settings. If a virus has updated the
year and a half. I bought all new components for a system about 2 years ago. 6 months after setting up the system and everything running fine, i notice that sometimes (at this point rarely) when i start the computer from a cold boot i would get a cmos checksum error. I'd reset the bios settings and everything would continue to work fine until about 2 months ago. When i would start the computer all the lights would come on, the fans would run, but it would not past post. Didn't even hear the post beep. At first if i restarted a few times it would eventually come on and work fine until left off for the night. Then it got to the point where no amount of restarts would get the system to come back on. I reset the cmos using the jumper, had the most recent version of the bios installed and even replaced the battery, issue still occurred. I ordered a new motherboard and in the mean time took the ram, video card, psu and hard drive out of my non-working system and into an older system i had to beef it up while i was using it. Everything worked fine for the 2 weeks i had all these components in the new system. I got my new motherboard about a week and a half ago, installed it and everything ran fine for the first 2 days. The 3rd day when i tired to turn it on i had the exact same problem as before. The lights would come on, the fans would run, but no post or beep noises at all. After one restart the computer worked fine after giving the same cmos checksum error. The next few days everything was working fine again, until this morning. Same problem, one restart and it is working again after the checksum error and bios reloaded to default. At this point i have no idea what could be causing this. The psu seemed to be working fine in the other computer, otherwise i would have replaced it already. I real