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How can i get to cmos

I need to reboot

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Posted on Jul 01, 2008

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Posted on Jan 02, 2017

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I have an acer aspire E1-472P-6860 laptop. Just a few days ago the keyboard stopped working. The mouse works and the the keys work but nothing else does.


Hi

access the cmos settings and try and reset the default settings

reboot press escape or F1 etc to access CMOS

25727166-kk45hi5thrg2ekkphxdk3mx1-5-0.gif select load setup defaults save & exit and it will reboot

retest keyboard

Jun 02, 2015 | Acer Computers & Internet

Tip

CMOS Checksum error


Issue:
CMOS Checksum Bad or CMOS Date/Time Not Set


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Cause:
This issue is caused when the CMOS values are incorrect. This issue can occur because of any of the below possibilities.
* Bad or old CMOS battery.
* BIOS update.

Workaround 1:
1. Disconnecting power from computer without shutting down computer.
2. Attempt to reboot the computer. If error still occurs after rebooting the computer enter CMOS setup and check all values, this includes verifying the time and date are correct. Once everything has been verified and/or changed make sure you save and exit CMOS setup.
3. If you have a Phoenix BIOS and have an option for 'Reset Configuration Data', set this value to 'Yes' and save and exit the CMOS.
4. If the computer was had the power disconnected while it was still running it is possible this could cause the CMOS to become corrupt. Ensure that the computer is ready to be shut off before turning off the computer. If you have a laptop computer ensure that the battery is charged before disconnecting the power connection.
5. If the CMOS values have become corrupted entering the values in CMOS setup and saving and exiting CMOS should resolve your issues.
Note: If this issue continues to occur after you turn off your computer off it is possible that the CMOS battery may be failing or already bad. Before considering replacing the CMOS battery try leaving your computer on for several days.
Workaround 2:
If you performed workaround 1 and the error occurs again after a complete power down (i..e. removing the power cord), the CMOS battery is likely bad. Most systems use a small coin style lithium battery. These often last 3-6 years, but at some point run out of juice and need to be replaced. For desktops, your system manual or motherboard manual should specify the type of battery and location on the motherboard. For laptops, it is often very difficult to access and may require a professional to replace it. To replace the battery on a desktop system:
1. Turn off the system and remove the power plug.
2. Remove the case or side panel to access the motherboard.
3. Look for a round silver coin cell, typically in a black holder.


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4. Remove the battery while noting which way the battery is located. You may need a small flat screwdriver to release the side clip.
5. Install the replacement battery with the same battery type, being careful to insert it in the same direction as the removed battery (or using the polarity marked on the holder or manual).
6. Reassemble the case and power.
7. Turn on the power. You will get the CMOS Checksum Bad error once more, but it should be the last time. Go into the BIOS setup and set the date and time, and any other options you prefer.

on May 30, 2010 | Computers & Internet

1 Answer

Amilo Pi 3525 cmos battery


Most laptops require you to take the laptopapart to get to the CMOS Battery. It will be a silver battery about the of a nickel on the motherboard. The most common isCR2032. Also sometimes the battery will be in a vinyl covering and have acable that attaches to a port on the motherboard. Which ever type you haveyou'll need to either remove the battery or unplug the cable and let the laptopsit for an hour or two. Then put it back, reassemble the laptop andreboot the laptop. With the CMOS battery out the computer will lose thedate, time and password.

May 03, 2012 | Computers & Internet

1 Answer

8002lci cmos


You'll have to remove the CMOS battery. Most laptopsrequire you to take the laptop apart to get to the CMOS Battery. It willbe a silver battery about the of a nickel on the motherboard. Themost common is CR2032. Also sometimes the battery will be in a vinylcovering and have a cable that attaches to a port on the motherboard. Whichever type you have you'll need to either remove the battery or unplug the cableand let the laptop sit for an hour or two. Then put it back, reassemblethe laptop and reboot the laptop. With the CMOS battery out the computerwill lose the date, time and password.

Apr 15, 2012 | Acer TravelMate 8002LCi PC Notebook

1 Answer

Laptop wont start



This issue is often caused by either an incorrect setting in CMOS Setup or a bad boot device, such as a bad hard disk drive.

  1. Verify your boot options are properly set in CMOS setup. I recommend having the CD or disc drive as your first boot device and then hard drive as the second boot device.
  2. If your CMOS Setup has an option to boot from the LAN disable this option.
  3. If you have changed any CMOS settings, make sure to save and reboot the computer.

If this does not resolve the issue, try resetting the CMOS values to the default settings, save and exit.
If this fixes the problem but it reoccurs again later you main need a new cmos battery. Or keep your battery always slightly charged.

Nov 16, 2011 | Toshiba Computers & Internet

1 Answer

My msi u100 mini laptop won't reboot


Hello..

When you encounter this kind of problem you need to check directly to the HDD. This is an HDD problem which the cable are not good. Try to change the SATA or IDE cable. Or you may reset the CMOS jumper you can see the CMOS jumper near the CMOS battery. Good luck!

Jan 09, 2010 | MSI Wind U100-030US Laptop

1 Answer

My toshiba equium just wont except the main password, cant reboot..cant get into bios


At this time you need to cleat the BIOS password first so that you can get into BIOS. To cleat the BIOS password you need to open your laptop you just remove the battery first. Remove the screw and open the back cover. Locate the CMOS battery, all password are stored in CMOS memory.

Remove the CMOS battery to clear the stored BIOS password, Or you can remove also the CMOS jamper near the CMOS battery and turn on the unit with in 10 second and turn off. Reinsert the jamper. Now the BIOS password are already clear you can get now in BIOS to change some settings. Good luck

Oct 08, 2009 | Computers & Internet

4 Answers

When I turn my computer on, I get an istant error message: CMOS setttings error. Any idea what to do?


I THINK YOUR MOTHERBOARD BATTERY MAY BE DAMAGED OR DOWN. YOU HAVE TO REPALCE THE BATTERY AND TRY AGAIN TO START THE PC.

Oct 03, 2009 | Fujitsu Siemens AMILO Pro V2010 Notebook

1 Answer

Every time I reboot, I get the same message.


Hi,

In that case you need to clear the CMOS the first ting you should do is to open your laptop then clear the CMOS by reseting the jumper you need to pull out the jumper within 5 second them put it back,

Good luck !!!

Regards
PCmania

Jul 07, 2009 | ASUS Eee PC 1000H Laptop

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