Cmos Checksum Error Upon Boot
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Cmos Checksum Error Press F1 To Continue
Smart fixes for your PC hassles Home Hardware Troubleshoot a BIOS or CMOS 'Checksum' Error Comments By Rick Broida, PCWorld Sep cmos checksum error dell 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 changed my BIOS.
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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 problem to fix. I cmos checksum error defaults loaded solution 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 power the CMOS? Contributing Editor Rick Broida writes abo
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views 41 Like this video? Sign in to make your opinion count. Sign in 42 25 Don't like this cmos checksum error evga video? Sign in to make your opinion count. Sign in 26 Loading... Loading... Loading... Rating is available when the video has been rented. This feature is not available right now. Please http://www.pcworld.com/article/240331/troubleshoot_a_bios_or_cmos_checksum_error.html 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 less Loading... Autoplay When autoplay is enabled, a suggested video will automatically play next. Up https://www.youtube.com/watch?v=G2yRfclYm-g next How to Clear the CMOS - Reset the BIOS & Why - Duration: 11:59. Johnny Phung 1,713,142 views 11:59 FIX PC Won't Start After Static Charge and CMOS Battery Reset - Duration: 12:47. VisioDeZ 43,244 views 12:47 CMOS Checksum Bad - Quick Easy Fix 1 - Duration: 2:14. HealMyPc 5,113 views 2:14 How to possibly fix a PC that will turn on but will not beep and will not display anything on screen - Duration: 22:19. RodneyDickson 1,583,525 views 22:19 What To Do When Your Computer Won't Start - From the Desktop with Kevin & Randy - Duration: 18:42. HP Computing Support 706,419 views 18:42 How to replace dead CMOS battery and configure BIOS settings - Duration: 6:35. Cube Computer Channel 183,918 views 6:35 cmos checksum bad solución - Duration: 27:55. EDU INFO 14,618 views 27:55 How to temporarily fix "CMOS checksum error-defaults loaded" - Duration: 3:48. JCarterDammit 179,478 views 3:48 How to Fix Rollercoaster Tycoon 3 Crashes - Duration: 0:59. StarletFroast 3,418 views 0:59 How to use old PC Power Supply for RC chargers - Duration: 6:21. 7bikerboy7 378,688 views 6:21 Main Bios
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn http://superuser.com/questions/487857/cmos-check-sum-error-while-booting more about hiring developers or posting ads with us Super User Questions Tags Users Badges http://www.tech-faq.com/cmos-checksum-bad-error.html Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top “CMOS check sum error” while booting up vote 1 down vote favorite cmos checksum I am using an HCL desktop system (Core 2 Duo, 1 GB RAM, Windows XP SP2). While booting I got the following message. CMOS check sum error. Press f1 to continue When pressing F1 it is working fine. I checked some other sites for this problem. They suggested to change the CMOS battery. I have changed the new battery. Still I have the problem. How to resolve this problem? boot checksum cmos share|improve this question edited Oct 15 cmos checksum error '12 at 7:28 slhck 125k38312360 asked Oct 15 '12 at 6:23 Haridharan 813 2 Try resetting the BIOS to defaults. –Karan Oct 15 '12 at 6:27 try upgrading the BIOS to the latest version. –bettsy583 Oct 15 '12 at 6:30 is possible to update the BIOS via offline? can you please share the steps? –Haridharan Oct 15 '12 at 6:54 @Haridharan If you mean reset it offline, yes but it is motherboard spcific. Go download/find the manual for your motherboard and you are looking for something called CMOS reset. It usually involves moving a jumper on the motherboard. –Scott Chamberlain Oct 15 '12 at 7:49 Little bit confused before updating the BIOS. Can you please help me. detailed system info : MainBoard -> Gigabyte 945GZM-S2 , Chipset -> Intel i945G/GZ , Processor -> Intel Core 2 Duo E4400 @ 2000 MHz , BIOS Version ->FC HI, BIOS Date ->04/24/2007(mm/dd/yyyy) . While downloading the BIOS update there are 3 revisions and each revision contains multiple BIOS revisions. I can find the FC version in rev 2.1 and its release date is 01/12/2007(mm/dd/yyyy). it is less than my bios date. Which one I have to download? gigabyte.in/products/product-page.aspx?pid=2425&dl=1#bios –Haridharan Oct 22 '12 at 8:56 | show 1 more comment 2 Answers 2 active oldest votes up vote 2 down vote accepted Update your
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 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 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 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 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