The time is not saved in the BIOS. Why do BIOS settings reset? BOOT section - boot management

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Both on personal computers and laptops, the BIOS shell plays a very important role: it is here that the order in which the system boots from media is established, the operation of the central processor is configured, the system time is adjusted, and individual hardware components can be overclocked. However, there are situations when it does not remember the settings just made, as a result of which after rebooting the device, all BIOS parameters remain the same. In this topic, we will figure out why the BIOS does not save settings and how to deal with it.

Why doesn't the BIOS save changes?

It is difficult to say immediately and unambiguously why the BIOS shell does not work as it should. This is due to the fact that there is no specific reason why everything happens this way, because such behavior of the BIOS can be influenced by several aspects:

CMOS battery failure. The main function of this battery is to store BIOS configuration parameters. Accordingly, its failure means that when the PC is turned off, the settings will not change, which means that the computer will always use only the BIOS configuration that was originally set.
Problems with the motherboard. The motherboard is the main hardware component to which all other elements of the computer or laptop are connected. Any problem with this board almost always leads to a variety of PC problems, one of which may be a situation where the BIOS does not remember the settings.
Damage to the contacts of the BIOS chip. Problems in the chip can lead to the motherboard simply not being able to receive information from the BIOS.
Damage to the power supply. The power supply you are using may be worn out or faulty. Because of this, it may not be able to withstand even the most minimal computer loads and experience minor interruptions that affect the performance of the BIOS.

Troubleshooting

As a practitioner shows, in most cases when the BIOS does not remember the settings, it is the CMOS battery that is to blame. The cheapest way to check if this is the problem is to try the battery in another device, which is not always possible. It will be easier, but also more financially expensive, to buy a new battery.

If you have checked this option, but the problem still remains relevant, then you need to check the remaining components: the motherboard, microcircuits and power supply. This must be done one by one. Having checked one detail, move on to another.

The mother card is the hardest to check. As before, the easiest way would be to connect to another motherboard, but for this you will need to reconnect almost all hardware components, and if you have a laptop, then this is almost impossible to do on your own. You can also visually assess its condition: check for smell, if there is any bitterness after long-term operation of the computer, if there are darkened spots and if the contacts have melted (the situation is the same with the BIOS chip).

If your BIOS settings reset after every reboot of your computer or laptop, then this situation can sometimes cause you great inconvenience. For example, in this case, you will not be able to use a password to log into the system or the BIOS setup program, or use your own processor frequency and voltage settings necessary to overclock the computer. However, practice shows that, as a rule, you can correct the situation when the BIOS does not save settings yourself, without the help of computer specialists.

Suppose you made some changes in the BIOS and saved them, then rebooted and discovered that the changes you made were not saved, that is, they did not take effect, and the system uses the factory default BIOS settings instead. Or, when booting, the computer reports that the BIOS contains incorrect data and prompts you to go to the BIOS setup program to make changes to it. Of course, if a similar situation is repeated constantly and your settings are constantly lost and not saved, then this creates significant problems in using the computer for its intended purpose.

A given problem may have several different causes, and the choice of method to solve the problem depends on what exact cause is behind the phenomenon. First of all, if such symptoms are detected, you should check. This battery powers the CMOS memory, which stores all data entered by the user into the BIOS. Therefore, if the battery is completely discharged, the contents of the CMOS memory cannot be stored for a long time.

It also happens that BIOS settings are not saved due to errors in the BIOS itself, poor contact of the BIOS chip with the motherboard, a poorly seated BIOS battery, a malfunction of the CMOS memory, and also, which happens less frequently, a malfunction of the power supply or power button.

Methods for solving the problem

In most cases, resetting the CMOS memory or replacing the battery powering the memory with a new one will solve the problem. We wrote about how to reset CMOS memory and how to change the battery in the relevant articles.

If you reset the CMOS memory and replaced the battery with a new one, but, nevertheless, the BIOS settings still reset, then you can try checking the power supply, the power button, and the contacts of the BIOS chip. It also makes sense to check whether the battery is securely in its socket. If you are sure that these factors are not the source of the problem, then most likely the problem is a malfunction of the CMOS memory, BIOS chip, or the motherboard itself. In this case, you will need to replace the faulty chip or replace the entire motherboard.

Conclusion

The ability to make changes to BIOS settings is an important tool that allows the user to optimize the operation of the computer and bring it in line with their requirements. Therefore, the inability to save settings in the BIOS of a personal computer or laptop is a great inconvenience for the user. This situation can have various reasons, but in most cases it is a consequence of poor contact between the battery supplying the non-volatile BIOS memory and the socket or its discharge. Therefore, replacing the BIOS battery can usually resolve the problem described.

If you were looking for BIOS settings in pictures, then you have come to the right address.

The changes made will be protected by a lithium battery built into the motherboard and maintaining the required parameters in the event of a loss of voltage.

Thanks to the program, it is possible to establish stable interaction between the operating system (OS) and PC devices.

Attention! The present Boot network configuration section allows you to adjust parameters related to system boot speed and keyboard and mouse settings.

After finishing work or familiarizing yourself with the Bios Setup Utility menu, you need to press the hot Exit key, which automatically saves the changes made.

Section Main - Main Menu

Let's start working with the MAIN section, which is used to modify settings and adjust timing indicators.

Here you can independently configure the time and date of your computer, as well as configure connected hard drives and other storage devices.

To reformat the operating mode of the hard drive, you need to select the hard drive (for example: “SATA 1”, as shown in the figure).

Type - This item indicates the type of connected hard drive;
LBA Large Mode- is responsible for supporting drives with a capacity of more than 504 MB. So the recommended value here is AUTO.
Block (Multi-Sector Transfer) - For faster operation here, we recommend selecting the AUTO mode;
PIO Mode - Enables the hard drive to operate in legacy data exchange mode. It would also be best to select AUTO here;
DMA Mode - gives direct memory access. To get faster read or write speed, select AUTO;
Smart monitoring - this technology, based on an analysis of the drive’s operation, can warn of a possible disk failure in the near future;
32 bit Data Transfer - The option determines whether the 32-bit data exchange mode will be used by the standard IDE/SATA controller of the chipset.

Everywhere, using the “ENTER” key and arrows, the Auto mode is set. The exception is the 32 Bit Transfer subsection, which requires the Enabled setting to be fixed.

Important! It is required to refrain from changing the “Storage Configuration” option, which is located in the “System information” section and not to allow correction “SATADetectTimeout".

Advanced section - Additional settings

Now let's start setting up the basic PC components in the ADVANCED section, which consists of several sub-items.

Initially, you will need to set the necessary processor and memory parameters in the system configuration menu Jumper Free Configuration.

By selecting Jumper Free Configuration, you will be taken to the Configure System Frequency/Voltage subsection, where you can perform the following operations:

automatic or manual overclocking of the hard drive - AI Overclocking;
changing the clock frequency of memory modules - ;
Memory Voltage;
manual mode for setting chipset voltage - NB Voltage
changing port addresses (COM,LPT) - Serial and Parallel Port;
setting controller settings - Onboard Devices configuration.

Power Section - PC Power

The POWER item is responsible for powering the PC and contains several subsections that require the following settings:

Suspended Mode- set automatic mode;
ACPI APIC- set Enabled;
ACPI 2.0- fix the Disabled mode.

BOOT section - boot management

Here you can determine the priority drive, choosing between a flash card, disk drive or hard drive.

If there are several hard drives, then in the Hard Disk sub-item the priority hard drive is selected.

The PC boot configuration is set in the Boot Setting subsection, which contains a menu consisting of several items:

Selecting a hard drive

The PC boot configuration is set in the Boot Setting subsection,

Quick Boot– acceleration of OS loading;
Logo Full Screen– disabling the screen saver and activating the information window containing information about the download process;
Add On ROM- setting the order on the information screen of modules connected to the motherboard (MT) via slots;
Wait For 'F1' If Error- activation of the function of forced pressing “F1” at the moment the system identifies an error.

The main task of the Boot section is to determine boot devices and set the required priorities.

ASUS EZ Flash– using this option, you have the opportunity to update the BIOS from such drives as: floppy disk, Flash disk or CD.
AINET– using this option, you can obtain information about the cable connected to the network controller.

Exit section - Exit and save

Particular attention should be paid to the EXIT item, which has 4 operating modes:

Save Changes– save the changes made;
Discard Changes + EXIT– leave the factory settings in effect;
Setup Defaults– enter default parameters;
Discard Changes– we cancel all our actions.

The following step-by-step instructions explain in detail the purpose of the main BIOS sections and the rules for making changes to improve PC performance.

Bios setup

Bios Settings - Detailed instructions in pictures

BIOS settings are usually saved in CMOS memory, which is volatile. Data storage when the power is turned off is provided by a battery located on the motherboard. If the battery is discharged or the circuits supplying power to the CMOS memory are faulty, the stored values may be lost.

Help identify the field beetle

Good day. I have an ASUS P5KPL-AM IN/ROEM/SI motherboard, they gave it to me with the diagnosis “everything is fine, but it does not save the BIOS settings.” As long as the mother is supplied with power from the power supply, everything is fine, as soon as the power supply is de-energized, the settings are lost. I changed the power supply, the battery, cleaned the contacts of the battery socket, flashed the BIOS to the last minute - zero results. I came to the conclusion that the jamb lies somewhere in the gap between the battery and CMOS, because of this, when the power from the power supply is turned off, the CMOS does not switch to battery power. And then I accidentally noticed a burnt-out field worker, who obviously performs this function.

Intel DP55KG does not save Bios settings when disconnected from PSU

I’ll say right away - I changed the dual diode and battery.
You plug the power supply into the network - the board starts itself, the BIOS warns about a dead battery.
If you do not disconnect the power supply from the network, then everything is fine - the settings are not reset. The board starts when you press poweron and loads Windows, the clock runs.
It was noticed that no current is consumed from the battery on the de-energized board and no voltage is observed on the clock quartz legs by the tester.
I looked at the DH67CL working board as an example - on a de-energized board, a current of 5 µA is taken from the battery, and on the quartz legs the voltage is 0.17V and 0.12V.

The BIOS chip does not receive power from the battery, ASUS A55BM-K

The room where the system unit stood was flooded. The bottom of the ASUS A55BM-K motherboard was in water. After flushing, a defect was discovered; the battery does not supply power to the BIOS chip. The call showed that the + is not coming from the battery. I've looked all over the area and still can't figure out where this path comes from.
Is it possible to run wires directly from the + battery through the diode to the power output of the microcircuit? Or maybe you can recommend something else.

Moved to the Sandbox.
maco

Bios always starts on the date 21 Jan 2029 and time 20-20-20

Hello forum users! I often browse the forum, but I had to contact you.
Got the mother GeForce6100PM-M2 v: 2.0 Installed Athlon 64 x2 4400+, Patriot memory 2Gig. Installed Windows 7. I drove it and gave it away. After 2 weeks they returned it with the words Cmos CheckSum error and the date in the BIOS is always 21 Jan 2029 20h 20 min 20 sec and it doesn’t move until you change it. On the bench table (Thermaltack PSU), the hard drive is uncoupled and we look at the attachment. The default settings don't help. Time can go by itself, but sometimes after 20 seconds it resets to an arbitrary one (immediately 47 or 52 seconds).

GA-8IG1000MK rev 1.0 no power CMOS

Greetings! I am small and stupid, and therefore I ask for help.
The board arrived with the problem of CMOS "flying". Battery 3.3 V. No short circuit. I couldn’t find a solder, I lifted the connector, rang the plus on the entire harness and around the bridge - it didn’t ring. The jumper here is not wired, there is no voltage on its nickels. Bios sewed. Please advise what to do.

P.S. Plus the batteries along the path go into the board. I still can’t call. Dual diode BAW56, rings at 530 mV. In general, I can’t find 3.3 from a battery anywhere...

The payment was in the stash. I got it, installed I3-2100 and 2 Kingston memory sticks of 2GB 1333
When you disconnect the power supply from the network, the board completely forgets the BIOS settings, although the battery is alive.

Well, what else does she need?

sorry for my Russian.

ASUS P5B stopped seeing 2-core processors

Hello. The ASUS P5B S775 motherboard no longer sees 2-core processors, it won’t start with them, it spins the fans. With Celeron D 2.8 it starts and works perfectly. The voltage on the processor is +1.33V. On 3 MOSFETs of the upper side (G-D-S): +12V, +2.56V, +1.33V. On 6 MOSFETs of the lower side (G-D-S): +10.35V,+1.33V,0V.
In addition, with a working CR2032 +3V battery, after each complete blackout, the date and clock, BIOS settings disappear, and upon startup, it displays “CMOS Settings Wrong” on the screen every time. Cmos Date/Time not set. Overclocking failed!"