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Hp pavilion dv4 1280us CMOS battery error code 502

Do have to replace the who CMOS battery case and cable or just the CMOS Battery coin

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Only the coin battery on board. They come different ways. Mine had a battery with a wire connected, another had just a coin size 2020. Different configurations around but ow days its just a coin size battery.

Posted on Mar 26, 2014

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Posted on Jan 02, 2017

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Computer says no video input signal beeps 7 times?


okies hmmmmm, ok turn it on, leave it running for about 20-30 mins, switch it off then turn it back on if it comes on then its prob a motherboard problem, would you know if it has ever been dropped? but try that. :))

Apr 16, 2014 | HP PAVILION A6230N DESKTOP PC

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

502 error code on hp pavilion dv4 1280us


Remove the bottom cover of the laptop. The CMOS battery is a disc 3.2 volt li-on battery. replace it with the same voltage and size battery.

Mar 26, 2014 | HP Pavilion Computers & Internet

1 Answer

Cmos battery error failure


The CMOS (BIOS) battery keeps the computer'a comfiguration and the Date & Time settings in the CMOS (BIOS) chip in its memory. When the CMOS (BIOS) battery is flat these configuration information is lost.
Replace the CMOS battery with a new one, in most cases this battery is a lithium 3 volt battery type CR2032 and it is coin size battery 18mm in dia.(check it to make sure the type of battery is installed on your motherboard).
When you replace this battery then go into the BIOS and set the Date & Time etc.

Jan 26, 2012 | Intel DG31PR Motherboard

1 Answer

My girlfriends Hp Pavilion A305W powers on then automatically powers off after it show a brief error message but also says F1 for startup. Should i press F1 and continue diagnosis?


Most probably your system is not getting your BIOS settings from your mainboard due to CMOS battery failure.

Check your CMOS 3.0v battery & replace it. Then reconfigure your BIOS settings from the CMOS setup.

Hope it helps

May 28, 2011 | HP Pavilion a305w (DM181AR) PC Desktop

1 Answer

Booting process interrupted during the booting process, pc reports error, press f1 to view setup or f2 to continue.


Try going to the setup and loading the default values. If this does not solve your problem its time to change your CMOS battery. Turn your system off. Open your case. You will find a coin like component. That is your CMOS battery remove it and replace it with a new one. When booting for the first time after replacing the battery,enter the correct date and time.

Nov 16, 2010 | HP Computers & Internet

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

CMOS Error


hi

2 things, first, you simply need to replace the cmos coin cell battery or worst case scenario, your processor may already be on its way to failing.

Oct 15, 2008 | Intel Pentium 4 505J Prescott 533MHz...

3 Answers

Error 0270


I beleive that error is the "realtime clock" error code. Most likely is the CMOS battery needs to be replaced.

Feb 22, 2008 | HP Pavilion dv6000z Notebook

1 Answer

Cmos battery?


Computer CMOS information CMOS is an on-board semiconductor chip powered by a CMOS battery inside IBM compatible computers that stores information such as the system time
How to replace the CMOS battery. Information about why time may be lost or decreasing rapidly and how to replace your computer cmos battery



Computer Battery Help The first type of battery is the backup battery, which is commonly referred to as the "CMOS battery".

Good Luck, Please dont for get to Vote/Thank You

Dec 19, 2007 | HP Pavilion N3390 Notebook

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