Laptop Cmos Error
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The Cmos Checksum Is Invalid Cmos Reset 502
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. See, most desktop motherboards have a small battery that supplies power to the cmos checksum error even after replacing battery 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 the Hassle-Free PC newsletter e-mailed to you each week. Related: PCs
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 cmos checksum error on boot Home How To Hardware BIOS CMOS CHECKSUM ERROR - DEFAULT LOADED Ask a question USESFRITBR
Cmos Checksum Error Defaults Loaded
October 2016 When a CMOS Checksum error occurs during system startup, it could mean that the system has been restored to default
How To Clear Cmos Checksum Error
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 http://www.pcworld.com/article/240331/troubleshoot_a_bios_or_cmos_checksum_error.html 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 http://ccm.net/faq/618-cmos-checksum-error-default-loaded 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 information), is depleted. The CMOS battery is a small pin found on the motherboard; you can refer to the manual provided with your motherboard to change it or have the nearby computer technician change it for you if you don't want to risk any damage. More information with: Replacing the battery of your motherboard (CMOS battery) Related : Cmos checksum error Cmos checksum error defaults loaded Checksum error Diskette Drive 0 seek failure (error message) (Solved) Cmos checksum error CMOS checksum error Checksum error / Cmos Default value / BIOS Setup Options [Solved] (Solved) BIOS ROM Checksum Error - System halted Download this article for free (PDF) Ask a question This document entitled «CMOS CHECKSUM ER
LocationMore...Search SalariesMy ApplicationsFind CompaniesSpecialtiesNewsfeedMy NetworkFind PeopleLearningLearning HomeBayt.com BlogUpcoming EventsCareer ArticlesMore...Career MapResearch ReportsSelf AssessmentCV Writing SupportJob Search Strategy CourseUpgrade to Premium Jobs All Jobs Salaries People Specialties Companies Learning Irrelevant Inappropriate or offensive. Spam (unsolicited http://www.bayt.com/en/specialties/q/10887/what-are-the-signs-of-cmos-battery-failure/ advertising). Irrelevant to Specialties or not an answer. Inappropriate or offensive. Spam (unsolicited advertising). Irrelevant Inappropriate or offensive. Spam (unsolicited advertising). Irrelevant to Specialties or not an Articl/Note. Inappropriate or offensive. http://www.pctechbytes.com/forums/index.php/topic/47120-cmos-checksum-invalid-cmos-502-error/ Spam (unsolicited advertising). Irrelevant to Specialties or not a Blog. Inappropriate or offensive. Spam (unsolicited advertising). Failure Modes Computer Hardware Troubleshooting Battery What are the signs of CMOS battery failure? cmos checksum Sign -1 Incorrect computer date and time settings. Also, the date/time keep getting reset even after you fix them in the BIOS. This is the most common CMOS battery failure sign. Sign -2 Your PC occasionally turns off or doesn’t start. Sign -3 Drivers stop working. Sign -4 You may start to get errors while booting that say something like cmos checksum error “CMOS checksum error” or “CMOS read error”. Sign -5 Some weird hardware issues such as your computer not being able to locate the mouse, keyboard, or printer. 0 Comments Answer Invite to Answer Follow Upvote 13 Answers Top Voted First Newest First Oldest First Answer added by: Abdul Yaseen Mohammed Project Coordinator 3 years ago When the CMOS data can no longer maintain info on the bios for example when you look at the date and time let says that your CMOS bios says the following January51997 (System manufactured Date of Mother Board) and time9:00am and you change it to correct information it should stay save by the CMOS by the way if look at the desktop clock time should have change. Press F1 to boot set up and F2 to Reset Boot Setup ( First boot devices goes to default as F loopy drive So if u turn your computer the next morning and the date and change again then your battery is weak if not date and time should be same when you change it the1st t
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