Hp Bios Checksum Error
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The Cmos Checksum Is Invalid Cmos Reset 502
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Cmos Reset 502 Fix
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Cmos Reset 502 Solution
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Cmos Checksum Error Even After Replacing Battery
Printers and Digital Press  HP Connected, Mobile Printing and Cloud Printing  Scanning, Faxing, and Copying  JetAdvantage, Printing Applications cmos checksum error fix and Services  Desktops Desktop Operating Systems and Recovery  Desktop Boot and Lockup  Desktop Wireless and Networking  Desktop Audio  Desktop Video, Display and Touch  Desktop Hardware and Upgrade Questions  Desktop Software and http://support.hp.com/us-en/document/c01368145 How To Questions  Sprout by HP  Business PCs, Workstations and Point of Sale Systems  Gaming Gaming Notebooks  Gaming Desktops  Gaming Accessories  Tablets and Mobile Devices Elite x3  Android  Windows  Calculators  Palm and WebOS  Software HP Workspace  HP Touchpoint Manager  HP Collaboration  Commercial PC Software  Archived Topics (Read Only) Notebooks Archive (Read Only)  Printers Archive (Read Only)  Desktops Archive (Read Only)  Tablets and http://h30434.www3.hp.com/t5/Desktop-Operating-Systems-and-Recovery/7-error-BIOS-checksum-error-while-installing-HP-update/td-p/4822013 Mobile Devices Archive (Read Only)  Software Archive (Ready Only)  Windows Beta and Previews Archive (Read Only)  Miscellaneous Topics (Read Only)  Your Voice Forum Feedback & Suggestions  HP Expert Portal Welcome to the HP Expert Program  Meet the Experts  News and Events  Blogs Open Menu Blogs Open Menu Best of the Community BlogMeet the ExpertsNews and EventsWelcome to the HP Expert Program Beware of fake HP Support Open Menu Beware of fake HP Support Open Menu Be alert for scammers who may be posing as HP representatives and only call numbers from people who have a label next to their screen name. If you think you have received a fake HP Support message, please report it to us by clicking on the blue “Report Inappropriate Content” button above the message. Thank you! Register · Log In HP Support Forum Home > Desktops > OS/Recovery > '7-error BIOS checksum error while installing HP update HP Support Forums Join in the conversation. Search the Community Entire ForumThis CategoryThis BoardUsers turn on suggested results Auto-suggest h
Blogs Viruses Cameras Components Computer Accessories Consumer Advice Displays E-readers Flash Drives Graphics Cards Hard Drives Home Theater Input Devices Keyboards Laptop Accessories Mobile Networking Operating Systems Optical Drives Processors Servers Smartwatches Streaming Services Storage Tablets Windows Hassle-Free PC http://www.pcworld.com/article/240331/troubleshoot_a_bios_or_cmos_checksum_error.html Smart fixes for your PC hassles Home PCs Troubleshoot a BIOS or CMOS 'Checksum' Error Comments By Rick Broida, PCWorld Sep 21, 2011 9:40 AM Reader Robert has an older Emachines desktop that recently developed http://ccm.net/faq/618-cmos-checksum-error-default-loaded 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: 'System BIOS shadowed. Check time cmos checksum 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 cmos reset 502 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 about business and consumer technology. Ask for help with your PC hassles at hasslefree@pcworld.com, or try
Subscribe to our newsletter Search Home Forum Ask a question Latest questions Windows Mac Linux Internet Video Games Software Hardware Mobile Network Virus Café How To Download Ask a question Windows Software Mac Software Linux Software Android Apps BlackBerry Apps iPhone Apps Windows Phone Apps News Encyclopedia Home How To Hardware BIOS CMOS CHECKSUM ERROR - DEFAULT LOADED Ask a question USESFRITBR October 2016 When a CMOS Checksum error occurs during system startup, it could mean that the system has been restored to default factory settings. The CMOS contains data related to BIOS and may have been reinitialized. It may also be possible to fix the problem by reinitialising BIOS. The problem could also occur due to the depletion of the CMOS battery. If the user cannot locate the pin battery, the help of a computer technician should be taken to prevent damage to the hardware or motherboard. The CMOS checksum error - defaults loaded should be solved after changing the CMOS battery. Symptoms Solutions: Symptoms When starting your PC, the following error message is displayed: CMOS wrong CMOS MEMORY size WRONG CMOS Checksum Bad CMOS checksum error defaults loaded Warning! CPU has been changed please re-enter cpu settings in the cmos setup and remember to save before quit! You are prompted to: Press F1 to resume Press F2 to load default values and continue This is due to the fact that the CMOS, which contains data related to the BIOS, has been reinitialized and that your PC has been reset to factory settings. Solutions: Reinitializing the BIOS Before making any costly maintenance try: reinitialized the BIOS. Change BIOS battery If the problem persists this may be due to the fact that the battery powering the CMOS (when the computer is shut down it allows the CMOS to store informat