Bios Error Cmos Checksum
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Cmos Checksum Error Fix
Smartwatches Streaming Services Storage Tablets Windows Input Devices Displays Printers Storage Networking Cameras cmos checksum error on boot Hassle-Free PC Smart fixes for your PC hassles Home Hardware Troubleshoot a BIOS or CMOS 'Checksum' Error Comments By Rick Broida, what is checksum error 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 something that http://ccm.net/faq/618-cmos-checksum-error-default-loaded 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 a pretty easy http://www.pcworld.com/article/240331/troubleshoot_a_bios_or_cmos_checksum_error.html 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 out a better way to
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 http://www.howtogeek.com/forum/topic/bad-bios-checksum-how-to-fix-it- tech27 Latest reply from G41M Topic Viewed 20879 times 1 2 Next » tech27 http://answers.microsoft.com/en-us/windows/forum/windows8_1-update/cmos-checksum-error-defaults-loaded-error/2fb504b4-4d4a-4c74-b752-16155b141e36 Posts: 387 This post has been reported. So here's my problem guys... Recently I did a clean install of windows XP on 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 cmos checksum out... I 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 cmos checksum error This post has been 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 re
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