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Cmos Checksum Error Fix
Input Devices Displays Printers Storage Networking Cameras Hassle-Free PC Smart fixes for your PC hassles cmos checksum error on boot Home Hardware Troubleshoot a BIOS or CMOS 'Checksum' Error Comments By Rick Broida, PCWorld Sep 21, 2011 9:40 AM Reader Robert has
What Is Checksum Error
an older Emachines desktop that recently developed a problem: "I installed a driver updater tool, and when I deleted it, it did something that changed my BIOS. The black screen appears when I boot up and reads: cmos checksum error defaults loaded '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 problem to fix. I don't think the driver-update utility is to blame here, but rather a poorly timed CMOS-battery failure. cmos checksum error press f1 to continue 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 power the CMOS? Contributing Editor Rick Broida writes about business and consumer technology. Ask for help with your PC hassles at hasslefree@pcworld.com, or try the treasure trove of helpful folks in the PC World Community Forums. Sign up to have
CMOS setup and check all values, this includes verifying the time and date are correct. Once everything has been verified and changed make
Cmos Checksum Error Dell
sure you save settings and then exit CMOS setup. If everything appears cmos checksum bad to be correct, you can try resetting the CMOS to the default values. After the CMOS values are reset,
Cmos Checksum Invalid
save changes and exit the BIOS to reboot the system. Tip: If this issue continues to occur after you turn off your computer off the CMOS battery may be failing or already http://www.pcworld.com/article/240331/troubleshoot_a_bios_or_cmos_checksum_error.html bad. Before considering replacing the CMOS battery try leaving your computer on for several days. Sometimes leaving the computer can re-charge the battery. How to replace the CMOS battery. Computer improperly turned off If the computer lost power while it was still running it may have corrupted the CMOS. Make sure the computer is ready to be shut off before turning off the http://www.computerhope.com/issues/ch000237.htm computer. If you have a laptop computer make sure the battery is charged before disconnecting the power connection. If the CMOS values have become corrupted enter the correct values in CMOS setup and then save and exit CMOS setup to resolve your issues. BIOS update recently performed If a BIOS update has been run on the computer the values stored in CMOS may have been reset. Enter CMOS setup re-enter all values and then save and exit CMOS setup. If you are unable to enter the CMOS setup, or the computer no longer keeps its BIOS values, the BIOS update may be corrupt. In this case, we recommend updating the BIOS again or reverting to an earlier version. Additional information See the BIOS and CMOS definition for further information about each of these terms and related links. Was this page useful? YesNo Feedback E-mail Share Print Search Recently added pages View all recent updates Useful links About Computer Hope Site Map Forum Contact Us How to Help Top 10 pages Follow us Facebook Twitter Google+ Pinterest YouTube RSS © 2016 Computer Hope Legal Disclaimer - Privacy Statement
CMOS Checksum Error StarletFroast SubscribeSubscribedUnsubscribe4444 Loading... Loading... Working... Add to Want to watch this again later? Sign in to add this video to a playlist. Sign in Share https://www.youtube.com/watch?v=G2yRfclYm-g More Report Need to report the video? Sign in to report http://www.howtogeek.com/forum/topic/bad-bios-checksum-how-to-fix-it- inappropriate content. Sign in Statistics 75,214 views 41 Like this video? Sign in to make your opinion count. Sign in 42 25 Don't like this video? Sign in to make your opinion count. Sign in 26 Loading... Loading... Loading... Rating is available when the video has cmos checksum been rented. This feature is not available right now. Please try again later. Published on May 30, 2012Click here to fix registry::http://www.reginout.net/Different strategies used for solving this problem::Restart the computerReplace CMOS BatteryReset Default CMOS SettingsScan Corrupt RegistryUpdate your BIOSReplug CPU ComponentsReplace your MotherboardFor more information click here::https://www.facebook.com/notes/backsp... Category Howto & Style License Standard YouTube License Show more Show cmos checksum error less Loading... Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next How to Clear the CMOS - Reset the BIOS & Why - Duration: 11:59. Johnny Phung 1,713,177 views 11:59 CMOS Checksum Bad - Quick Easy Fix 1 - Duration: 2:14. HealMyPc 5,113 views 2:14 How to temporarily fix "CMOS checksum error-defaults loaded" - Duration: 3:48. JCarterDammit 179,478 views 3:48 How to replace dead CMOS battery and configure BIOS settings - Duration: 6:35. Cube Computer Channel 184,957 views 6:35 Solving the CMOS checksum error - Duration: 1:31. DiegoG's Tech Channel 2,638 views 1:31 How To Reset CMOS - Duration: 2:23. eTeknix 694,103 views 2:23 How To Reset CMOS - Duration: 2:07. HiTechReviewsUK 29,657 views 2:07 PRESS F1 TO BOOT ERROR ON PC FIX - Duration: 2:55. Charlie Charles 347,130 views 2:55 How to: Test and Replace Computer CMOS Button Cell Battery - Duration: 9:58. GuruBrew 28,393 views 9:58 How to Fix CMOS checksum error on Dell Inspiron 570 (BIOS Update) - Duration: 1:13. Cedrick Palado 3,153 v
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 Latest reply from G41M Topic Viewed 20879 times 1 2 Next » tech27 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 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 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 reported. Cmos equals continuous metal oxide semiconductor. It is the small disk battery found on your motherboard. It is usually a cr2032 that can be purchased at a walmart......etc. In a laptop, it could be sheathed in a holder of some type and be more expensive. Reports: · Posted 4 years ago Top semiretired Posts: 1214