Cmos Checksum Bad – Date Time Not Set
In case, you aren’t able to start your PC, then CMOS is responsible for this. You need to fix this issue as quick as possible to use your computer productively.
It didn’t make any sense because the battery is only supposed to keep the BIOS data when the computer is turned off. The computer should have booted but it didn’t. The method that made the computer boot again was to remove the CMOS battery and reinserted it and then wait an hour or more. After that the computer would boot and go into BIOS, but without replacing the weak CMOS battery with a fresh one it occurred again the next morning. The computer powered off after pressing the power button.
Software on the motherboard is called the BIOS (Basic Input Output System). In addition to booting the computer, the BIOS also contains a lot of hardware settings, such as speed, voltage, system time and boot priority. BIOS shell32.dll download settings are not stored on the hard drive, but using a separate chip called CMOS (Complementary Metal Oxide Semiconductor). In a way, that keeps the CMOS clock running even if the PC is off.
- You’re probably able to run with the original RAM only, as the default settings allow the RAM to run, but it can’t save new defaults to run the new RAM.
- HP 510n-Win XP-Phoenix Bios 4.0/Rel.6.0-Intel 1.2-256MB ram-40 G HDD. Thanks for any help Would a bad battery but get "no fixed disk" message.
- My best guess is it’s failing to save the settings for your new RAM, and so just won’t boot into a useable state.
- I’ve been having problems since installing some new RAM into my PC.
- Here are my posts and replies made to get an idea of what I have been working with and tested so far.
- I have previously asked for help on one other forum.
Way 2: Reset The Basic Input/output System (Bios)
It is the first program to run when the user powers the computer. This, in turn, is responsible for initializing and testing the hardware, like CPU, memory, keyboard, mouse, etc. By disconnecting and then reconnecting the CMOS battery, you remove the source of power that saves your computer’s BIOS settings, resetting them to default. I’ve noticed that If I remove the CMOS battery on the motherboard the computer would not start.
Theoretically, your PC will still to power-on if you do not replace this battery but you will continue to get this error. That means you will have to go through those extra steps on BIOS every time you turn off your machine and then boot up which can be annoying. Complimentary Metal-oxide Semiconductor or CMOS is a battery-powered semiconductor chip on the motherboard, which stores all the information related to the BIOS.