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I'm having issues regarding my CMOS battery. It seems to only last around 3months. I sent it back to where I bought it from, and they said they flashed my BIOS which has solved the problem. But 2months later and the battery is flat again. I get a cmos checksum error at startup. The motherboard is a foxconn P9657AA-8EKRS2H. Can I do anything at home to resolve this issue. Or will I need to send it back again. As it's not fit for purpose can I ask for my money back after 6month? Thanks DJ.

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I am having problems with viruses in my computer. can you help me?

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I need to find a replacement CMOS battery.


check some computer sites or even local radioshack may sell cmos batteries. A site recommended are newegg.com

Oct 04, 2012 | HP Compaq Dc7600s Hstnc-004P-Sf Pc

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CMOS Checksum error


<b>Issue:</b><br /> CMOS Checksum Bad or CMOS Date/Time Not Set<br /> <br /> <img src="matrix12_1.jpg" /> <br /> <br /> <b>Cause:</b><br /> This issue is caused when the CMOS values are incorrect. This issue can occur because of any of the below possibilities.<br /> * Bad or old CMOS battery. <br /> * BIOS update<br /> <br /> <b>Workaround 1:</b><br /> 1. Disconnecting power from computer without shutting down computer.<br /> 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. <br /> 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. <br /> <p>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. <br /> 5. If the CMOS values have become corrupted entering the values in CMOS setup and saving and exiting CMOS should resolve your issues.<br /> <p><b>Note:</b> 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. <br /> <b>Workaround 2:</b><br /> <p>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:<br /> 1. Turn off the system and remove the power plug.<br /> 2. Remove the case or side panel to access the motherboard. <br /> 3. Look for a round silver coin cell, typically in a black holder.<br /> <br /> <br /> <img src="matrix12_0.jpg" /> <br /> 4. Remove the battery while noting which way the battery is located. You may need a small flat screwdriver to release the side clip. <br /> 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). <br /> 6. Reassemble the case and power. <br /> 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.<br /> <br /> <br /> Hope this will help...Your response is very much appreciated...

on Jan 24, 2011 | PC Desktops

1 Answer

Dell Inspiron 530 won't start, CMOS


Sounds like the CMOS battery is dead. You will find this battery on the mother board. It is a round watch battery, pull it and take it to a store like Walmart to get a proper replacement. I bet if you check your system time, it is wrong too.

Feb 20, 2012 | Dell Inspiron 530 Desktop Computer

2 Answers

No signal to monitor. no beeps at start up. fans running. new video card installed (after issue began) monitor & cord are working fine (have checked both with other computer)


check your RAM (random access memory) m sure your ram is not working

This will help. Thanks please keep updated. please do rate the solution positively .Thank you for using Fixya

Regards
Manish

Mar 26, 2010 | E-Machines eMachines Desktop PC

2 Answers

WHAT IS THE BATTERY USED TO POWER THE CMOS IN SYSTEM DM170A-ABA?


Hi,

The CMOS battery is a coin battery with the model number CR2032

This is what they look like >>>>>>>
b5ef95d.jpg


Regards.

Mar 08, 2010 | HP Pavilion a350n PC Desktop

1 Answer

My CF-29 has battery issues


I'm just thinking that this might be caused by your power supply unit that came with the laptop although I'm not totally sure about this. When you are at home what I would recommend you do is remove the battery and just use the laptop whilst it's connected to the power supply as this preserves the life of the battery. Obviously charge the battery up and when it's full use the battery alone without the power supply unit. Carry out this test if you haven't done so already and connect the power supply but remove the battery and see if you face any problems. If it is the power supply then you may need to replace that. Good luck. Andrew

Jan 17, 2010 | Panasonic Toughbook 29 Touch (P/N...

2 Answers

What type of CMOS battery does a Dell Dinmension 4600 use?


Hi friend,
A coin-cell battery maintains computer configuration, date, and time information. The battery can last several years.
If you have to repeatedly reset time and date information after turning on the computer, replace the battery. You can read anything about your dell dimension 4600 PC like....how to change the battery click on LINK


With Regards
Avnish Kumar

Jan 09, 2010 | Dell Dimension 4600 PC Desktop

1 Answer

Amber light solid. Replaced the power supply ad the cmos battery. removed the memory and reconnected. Plugged back in and I hear the fan running kind of loud (louder than before) Still solid amber light


most times i have seen amber light, if it is where the pwr light is on front of tower means ur mother board might be fried. check capacitors one by one and make sure none are extended or leaking. dell has had this issue before when they sent out a bad batch of capacitors. may last it job was mostly issues with this. good luck.

Dec 11, 2009 | Dell OptiPlex GX520 PC Desktop

2 Answers

Static build up on motherboard


this fix doesn't seem correct. pulling the battery will make the system lose date time at least. the solution Dell gave me for this very same problem was to pull the power cord and the press and hold the power button for 15-20 seconds. this dissipates any charge left in the motherboard. then reconnect the power cord and restart the machine. obviously this isn't a preferred solution, only a work-around until the real problem can be corrected which will likely be a motherboard replacement.

Oct 29, 2008 | PC Desktops

1 Answer

CMOS BATTERY ERROR


You said that you already bought a new cmos bat, but still theres a problem.check the cmos battery socket,power on tyour pc and go to cmos setup,optimize default setting and set time and date.

May 27, 2008 | PC Desktops

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