Check Sum Cpu Error
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Checksum Error Fix
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What Is Checksum Error
Rick Broida, PCWorld Sep 21, 2011 9:40 AM Reader Robert has an older Emachines desktop that recently developed a problem: "I installed a driver updater tool, and when I deleted it, it did cmos checksum error defaults loaded something that changed my BIOS. The black screen appears when I boot up and reads: 'System BIOS shadowed. Check time and date settings. System CMOS checksum bad--default configuration used.'" Robert says he's tried contacting both Phoenix Technologies (makers of the BIOS) and Emachines, and neither company could help. (The BIOS dates back to 2003, and the system itself is long out of warranty.) Fortunately, this sounds like cmos checksum error press f1 to continue a pretty easy problem to fix. I don't think the driver-update utility is to blame here, but rather a poorly timed CMOS-battery failure. See, most desktop motherboards have a small battery that supplies power to the BIOS even when the machine is turned off. This battery might last two years or it might last 10, but when it fails, you'll often see an error message like the one above. (Your system will also fail to keep proper time, as the clock is one of the elements powered by that battery.) Most CMOS batteries are standard CR2032 "button" cells, which cost no more than a few bucks at your local drugstore, but check your motherboard documentation just to be safe. Replacing one is usually a two-minute job: pop out the old one, pop in the new one, and you're done. After that, you'll probably need to venture into the BIOS to reset the clock and double-check other system settings (like boot priority). Just be glad this didn't happen to your laptop. Laptops use CMOS batteries just like desktops, but on most models they're difficult--if not impossible--to replace. Which begs the question: After all these years, why haven't laptop manufacturers figured
The How-To Geek Forums Have Migrated to Discourse How-To Geek Forums / Windows XP Bad Bios checksum (How to Fix it) ??? (39 posts) Started 4 years ago by tech27
How To Clear Cmos Checksum Error
Latest reply from G41M Topic Viewed 20879 times 1 2 Next » tech27 Posts: 387 cmos checksum error keyboard not working This post has been reported. So here's my problem guys... Recently I did a clean install of windows XP on
Cmos Checksum Error After Replacing Battery
my PC, everything goes smooth and no errors. But after a day I use it and shut it down for an hour and when I return and turn my PC again this problem comes out... I http://www.pcworld.com/article/240331/troubleshoot_a_bios_or_cmos_checksum_error.html have no idea why it happened, so if anyone knows how to fix this I will gladly appreciate it... Btw.. I have some experienced on PC troubleshooting but sad to say it is my first time to encounter this problem and I have no idea how to fix it.. So please I really need your help guys.... Reports: · Posted 4 years ago Top Sarris Posts: 189 This post has been http://www.howtogeek.com/forum/topic/bad-bios-checksum-how-to-fix-it- reported. Causes of CMOS Checksum Bad Error There are usually three main reasons that a CMOS Checksum Bad Error occurs. They include: 1. CMOS Battery may not be functioning properly. The battery life may have expired. (it's probably this) 2. The user or a virus may have updated the BIOS. 3. 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). This is from tech-faq.com Also, please don't multiple post the same question. Thanks & good luck Reports: · Posted 4 years ago Top tech27 Posts: 387 This post has been reported. First of all... Sorry for doing multiple post but I didn't meant to do that because every time I post it says "404 Not found" hmmm... so what should I do first to solve this problem ???? Reports: · Posted 4 years ago Top tech27 Posts: 387 This post has been reported. BTW.. what does CMOS means ??? Sorry I had never encounter a bios problem before..... Reports: · Posted 4 years ago Top semiretired Posts: 1214 This post has been reported. Cmos equals continuous metal oxide semiconductor. It is
computer's data is intact and unhampered. The data is scanned and tested for accuracy, either based on how well it relates to data elsewhere http://www.tech-faq.com/checksum-error.html or based on previous data that was stored on the same computer. Essentially, all of the bits of data in a particular document or file are added up and a number or hash is http://www.bleepingcomputer.com/forums/t/435277/pc-seems-strange-cmos-checksum-error/ created. This number or hash can then be compared to the number or hash generated from the same file on another person's computer or at a previous time on the same computer. When checksum error does a Checksum Error Occur? Although a checksum error can occur at any time while a computer is comparing data, it is most commonly present during a computer's startup procedure. During a computer's start up processes, the BIOS settings, which are stored in a CMOS memory chip, are computed and then checked against the previous value. If the computed values do not match exactly, the computer cmos checksum error warns the user with a checksum error message that the data may have been changed or corrupted between start up cycles. All BIOS programs present a different error and therefore will either continue with booting or refuse to boot until the problem is corrected. Depending on the type and the severity of the error generated, there may be one of a variety of ways to rectify the issue. The most common cause of a checksum error during the startup process is a faulty battery that is not providing sufficient power to the motherboard when the computer is off. However, motherboard malfunctions and viruses can also contribute to checksum errors. Other Types of Checksum Errors Another type of checksum error may occur with any program at any time. It is usual for many programs to now provide checksum information when that program is downloaded. Using a checksum program or MD5 hash checker, a user can quickly compare the checksum of a downloaded program with the checksum that the software developer provides. This is a common way to make sure that users are downloading the proper program and that no data was corrupted during the download process. Checksum errors ori
List Welcome Guide More BleepingComputer.com → Hardware → Internal Hardware Javascript Disabled Detected You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality. Register a free account to unlock additional features at BleepingComputer.com Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site. Click here to Register a free account now! or read our Welcome Guide to learn how to use this site. PC seems strange CMOS checksum error? Started by Dissension , Dec 29 2011 09:41 PM Please log in to reply 8 replies to this topic #1 Dissension Dissension Members 12 posts OFFLINE Local time:07:16 PM Posted 29 December 2011 - 09:41 PM Having problems with a Acer T120. I found a vga dell lcd monitor that looked okay on the curb. So, I took it home and plug it in, it seemed okay, so I attached it to the downstairs pc. When powered on, no image. Monitor will turn on then it has this weird blue line on the very top. I swapped the monitors and the acer monitor would do the SAME thing. Nothing on the screen but a blue line on top. I bought a new vga cable, that was not the issue. So, all I can think of was to buy a low profile video card. Mostly because I dunno what else to do. The monitor is connected to the video card and it works kind of. Some issues came up with the "installed" video card. This is the video card: http://www.newegg.com/Product/Product.aspx?Item=N82E16814125346 On post, everything was e