Cmos Checksum Error On Boot Up
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Gadgets Subscribe Resources Hardware Phones Printers Ultrabooks Blogs Viruses Cameras Components Computer Accessories Consumer Advice Displays E-readers Flash Drives Graphics Cards Hard Drives Home Theater Input Devices Keyboards Laptop cmos checksum error defaults loaded Accessories Mobile Networking Operating Systems Optical Drives Processors Servers Smartwatches Streaming cmos checksum error press f1 to continue Services Storage Tablets Windows Input Devices Displays Printers Storage Networking Cameras Hassle-Free PC Smart fixes for your PC cmos checksum error dell hassles Home Hardware 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
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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: '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, cmos checksum error defaults loaded solution 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 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
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like this 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 http://www.pcworld.com/article/240331/troubleshoot_a_bios_or_cmos_checksum_error.html 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 less Loading... Autoplay When autoplay is enabled, a suggested video https://www.youtube.com/watch?v=G2yRfclYm-g will automatically play next. Up next How to Clear the CMOS - Reset the BIOS & Why - Duration: 11:59. Johnny Phung 1,713,142 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 183,918 views 6:35 Como reparar el error cmos checksun - Duration: 7:42. Er Manu 13,446 views 7:42 Solving the CMOS checksum error - Duration: 1:31. DiegoG's Tech Channel 2,638 views 1:31 100% FIX The file is possibly corrupt. The file header checksum does not match the computed checksum - Duration: 4:28. PC4USER - Компьютерный канал 2,281 views 4:28 How to Fix BIOS Can't Save Settings - Duration: 3:43. ishadi aplus 13,649 views 3:43 How To Reset CMOS - Duration: 2:23. eTeknix 694,103 views 2:23 BIOS / CMOS Batterie wechseln nach "checksum error" - Duration: 3:12. Tuhl Teim DE 3,888 views 3:12 CMOS Checksum Error - Dia de técnico - Duration: 6:00.
Smartphones More Software Memory Power Supplies Peripherals Displays Automotive PSUs Android Your question Get the answer Tom's Hardware>Forum>Motherboards>Bad checksum error in boot up !> Bad checksum error in boot up ! Tags: Motherboards Boot CPUs Last response: December 26, 2011 2:16 AM in Motherboards Share http://www.tomshardware.com/forum/227780-30-checksum-error-boot swayzak March 9, 2007 10:15:38 PM hi I have had this P4PE, Pentium 4 3.06 setup for a few years. It has been OK - coldboot problems occasionally (often have to go through BIOS to boot successfully). But once up & running it's fine. Incidently, it often speaks "No cpu installed, No cpu installed" on boot up, even when it boots normally ! Weird but there you go. However, recently I've been getting bad checksum errors & the CMOS resets to default. Tonight it cmos checksum said the cpu was 2300 MHz ! Have to change BIOS settings back to my normal settings each time & it then boots OK. When I change the cpu back in BIOS, the options are "3066 MHz" or "Manual". Can anyone advise here ? Could it be something as simple as a CMOS battery change (it's about 5 years old now) ? I hope it's not on it's last legs...... cheers swayzak More about : bad checksum error boot PC_Side_Line March 11, 2007 cmos checksum error 5:47:03 PM Bro, u forgot to remove ur pc from A/C during ur recent LIGHTNING strikes in your area! carzy things then happen. Invest in a UPS, u'll get less crazier things! 4Ryan6 a c 169 à CPUs a b V Motherboard March 11, 2007 6:50:43 PM Try changing the CMOS battery, and see if the problems go away. Related resources Help! CMOS Bad Checksum and Cursor Only on Boot - Forum Asus M2N68-AM Plus Bad BIOS Checksum Error - Forum CMOS Checksum error - Forum Checksum Bad - Forum CMOS/GPNU Checksum Bad K7S5a rev3.1 - Forum Can't find your answer ? Ask ! Get the answer nukemaster a c 229 à CPUs a c 194 V Motherboard March 11, 2007 6:53:18 PM EDIT 4ryan6 beat me to it!!!! Well if the battery does start to die then when the computer is powered off(not on all boards)you can loose the cmos data. The may cause your 2.3 issue. 11.5 X 200(400ddr) = 2300 11.5 x 266(533ddr) = 3059(close enough to me) When your cmos looses data you will also get a checksum error, and maybe even get a new CPU detected "error". Head on out to the dollar store and get a new battery its like xx32(i forget the first numbers....xx16 is too thin) Hope this helps swayzak March 11, 2007 7:36:23 PM Thanks folks. I found a new 3v lithium battery (CR2032 I think) & replaced the old one. 5 cold boots so far without the er