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CMOS 502 error following latest BIOS update

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The laptop was new at the end of August 2018.

A few days ago the HP Support Assistant providied a BIOS update which I installed.

Since then on power up I first get the power switch light flashing, then the light on the caps lock button give 3 long and 5 short flashes which I understand says it can't find the CPU.

Forcing a power off, waiting the n powering on again gives "The CMOS checksum is invalid." CMOS 502.

Press enter to rest and the computer starts and runs fine.

I assume that the BIOS updtae is invalid, or has not installed correctly (all done through HP Support assistant).

Any advice and a fix greatly appreciated


Re: CMOS 502 error following latest BIOS update

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Hi

 

https://support.hp.com/us-en/document/c02693833

 

Hardware

3.5

The processor is not detected.*

 

Indicates potential CPU failure.

1 If able, reseat CPU.

2 If able, test known good CPU.

3 Replace affected component.

4 Replace CPU & Main-Board if unable to perform steps.

You are correct.

BIOS NOT Saving my Virtualization settings

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Hi,

I want to enable my virtualization mode enable in BIOS , But after pressing F10 to save settings , every things goes wrong and laptop restarted and settings not saved! what is the problem

i attached my system information for more information,

Untitled.png

 

 

 

 

 

Boot device not found, Smart check: passed short: dst passed but idk what to do now

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After my lil bro downloaded a virus that happened. Now idk what to do

Hanging

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Hi my note book was hanging while kept in idle for over night with using power adaptor. Power button light and keyboard backlights are still ON. When I hit the enter key nothing happing. I need to forceably power off and ON by pressing the power button to retrive the systenm for opeartion. This is happing moslty while using with power adaptor pluged in. I have tested with battery for 3 hours kept idle, no hanging complint. I have run the all hardware diagnostic and other all test including power adaptor test. Every thing shows passed. I recently installed the windows 10 64 bit and no other software are apps installed. 

 

Further I have upgraded from original otebook was shipped with windows 10 64 bit HOME and I upgraded with Pro by signing with my microsoft ID for Pro licence. After upgraded I am unable to recovery to factory setting by pressing F11 key. F11 key wont shows HP recovery software. It goes to only windwos default recovery option. 

 

Any slolutions please? Thanking yopu in advance.

Re: Boot device not found, Smart check: passed short: dst passed but idk what to do now

BIOS Admin password lost

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Добрый день . Как убрать запрос BIOS Admin password lost и попасть в биос?

Unable to image from the server

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Hi,

 

I am facing the issue while imaging the laptop from the server 

having error "Failed to find a valid network adapter". Please have a look on the attached image.

Any help would be appreciable.

WhatsApp Image 2018-12-14 at 10.52.50 AM.jpeg


Re: how to edit os boot manager selections?

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Hi

Surely the BIOS has a Restore to Defaults that would put it back to plain vanilla?

Unless you dont mean Boot Manager

Boot Man x 5.jpgF5/F6 may re-arrrange the sequence.

 

 

Re: Boot device not found, Smart check: passed short: dst passed but idk what to do now

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The only thing right now that i can use is the UEFI 

 

Re: BIOS Admin password lost

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Welcome to the HP Support Community

 

For that model you will need to contact HP in your region and they should be able to send you a customized SMC.bin file which you can use at boot to reset the password.

 

Contact Support >> http://www8.hp.com/us/en/contact-hp/ww-contact-us.html

 

When talking to the HP rep ask them to escalate your service request.

 

Just to note:

 

Do not try removing the RTC/BIOS battery.  As it will not remove the password, but it may reset the clock and as SMC files are time coded, a large disparity between the system clock and the time encoded in the SMC may cause it to fail.

 

REO

HP Pavillion x360 not charging

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I have a HP Pavillion X360 2 in 1 computer

The unit starts up and gets to boot but no OS on the M.2 drive as yet.

But the issue is more with the power supply i think.

It is not powering from the AC adapter nor charging. If I remove the battery it will not power up. I get a little orange light at the AC point when you first press the power button. Then it flashes white from then on

 

The unit boots to the bios and then fails as no OS yet.

I have tried 3 different AC units on the laptop. They all work on other units.

Does anyone have any advice?

 

David

Re: how to edit os boot manager selections?

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Hi

 

Thre is

easyUefi

Warning Will Robinson

BUT it is from an unknown publisher and may do more harm than good.

Re: Lost power on password for Presario C700

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Your very welcome

 

REO

Hp elitebook folio 9470m stuck in bootloop

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ever since I started up my laptop and got a blue screen it wont go past the hp logo on boot and just continuously turn back on just to go to the hp logo and turn off again, its stuck in a loop, I tried disconnecting my ctmos battery, I tried windows + B as well but that takes me to a black screen where my caps lock starts blinking and then does nothing else, also draining the static and restarting didnt help, Please help me


Re: CMOS 502 error following latest BIOS update

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 wrote:

Hi

 

https://support.hp.com/us-en/document/c02693833

 

Hardware

3.5

The processor is not detected.*

 

Indicates potential CPU failure.

1 If able, reseat CPU.

2 If able, test known good CPU.

3 Replace affected component.

4 Replace CPU & Main-Board if unable to perform steps.

You are correct.


Thank you for the link. This seems to have worked successfully.

Re: Error message at startup! "Product information not valid"

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,

 

Thank you for visiting the HP Forums! A great place where you can find solutions for your issues, with help from the community!

 

I understand you are getting system board 00a system information is not valid error on your PC.

 

Don't worry I'll try to help you out.

 

Did you make any software or hardware changes on your PC?

 

Did you replace any hardware components on your PC previously?

 

If the system board was replaced or if it is a faulty system board on your PC. The product information stored in the BIOS chip would have got erased.

 

You have to contact HP and get the PC serviced.

 

HP uses a tool called DMI tool by which the product details are entered back on your PC.

 

However, this tool is limited only to HP partners and HP service center technicians.

 

I will share you few details through a private message about the service options for your laptop.

 

Please watch your inbox for more information.

 

Hope this answers your query!

Have a pleasant day ahead! :)

 

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Boot Device Not found Hard disk (3FO) can not boot my computer

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I just get the error Boot Device not found and it was working then it wasn't I have tried all the F2 and F11 things but don't seem to be able to get it to boot.

Re: Boot Device Not found Hard disk (3FO) can not boot my computer

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Tap esc as you power up until you get to a menu then F2 for diagnostics...choose component tests then storage/hard drive. Run the full test and let us know the results, please. Looking like it may need to have the hard drive replaced. 

Re: Hard Drive Short DST failed

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Thank you for your help, sir.

I have a further query if you don't mind.

Since you can see the make and model of my laptop, can you tell me if it supports an SSD? I thought that if I'm replacing it anyway, may as well get an SSD.

Also my laptop has dual RAM channels, one which is occupied by the stock 4GB DDR3. If I want to upgrade it and buy a secondary stick to make it 4+4, can i buy DDR4 or do I need to stick to DDR3?

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