Bio Checksum Error
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and removed. (August 2012) (Learn how and when to remove this template message) Effect of a typical checksum function (the Unix cksum utility) A checksum is a small-size datum from a block of digital bios checksum error gigabyte data for the purpose of detecting errors which may have been introduced during
Bios Checksum Error Fix
its transmission or storage. It is usually applied to an installation file after it is received from the download server.
Main Bios Checksum Error Gigabyte
By themselves, checksums are often used to verify data integrity, but should not be relied upon to also verify data authenticity. The actual procedure which yields the checksum, given a data input is
Cmos Checksum Error Fix
called a checksum function or checksum algorithm. Depending on its design goals, a good checksum algorithm will usually output a significantly different value, even for small changes made to the input. This is especially true of cryptographic hash functions, which may be used to detect many data corruption errors and verify overall data integrity; if the computed checksum for the current data input matches the stored value checksum error on boot of a previously computed checksum, there is a very high probability the data has not been accidentally altered or corrupted. Checksum functions are related to hash functions, fingerprints, randomization functions, and cryptographic hash functions. However, each of those concepts has different applications and therefore different design goals. For instance a function returning the start of a string can provide a hash appropriate for some applications but will never be a suitable checksum. Checksums are used as cryptographic primitives in larger authentication algorithms. For cryptographic systems with these two specific design goals, see HMAC. Check digits and parity bits are special cases of checksums, appropriate for small blocks of data (such as Social Security numbers, bank account numbers, computer words, single bytes, etc.). Some error-correcting codes are based on special checksums which not only detect common errors but also allow the original data to be recovered in certain cases. Contents 1 Algorithms 1.1 Parity byte or parity word 1.2 Modular sum 1.3 Position-dependent 1.4 General considerations 2 See also 3 References 4 External links Algorithms[edit] Parity byte or parity word[edit] The simplest checksum algorithm is the so-called longitudinal parity check, which breaks the data into "words" with a
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 Accessories Mobile Networking Operating Systems Optical Drives Processors Servers Smartwatches Streaming Services Storage Tablets Windows Input cmos checksum bad Devices Displays Printers Storage Networking Cameras Hassle-Free PC Smart fixes for your PC hassles cmos checksum failure Home Hardware Troubleshoot a BIOS or CMOS 'Checksum' Error Comments By Rick Broida, PCWorld Sep 21, 2011 9:40 AM Reader Robert has an cmos checksum failed 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: 'System https://en.wikipedia.org/wiki/Checksum 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. See, http://www.pcworld.com/article/240331/troubleshoot_a_bios_or_cmos_checksum_error.html 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 the Ha
CMOS setup and check all values, this includes verifying the time and date are correct. Once everything has been verified and changed http://www.computerhope.com/issues/ch000237.htm make sure you save settings and then exit CMOS setup. If everything appears http://marc.info/?l=mandrake-newbie&m=103214688223354 to be correct, you can try resetting the CMOS to the default values. After the CMOS values are reset, 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 checksum error or already 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 bios checksum error off the 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 Le
Sunday 15 September 2002 10:56 pm, jbarron201@attbi.com wrote: > yes!I can and have tryed that and I get the same thing. > ----- Original Message ----- > From: "et"