Specific procedure o clear CMOS in my p6-2065sc

[prometeo20082]

Hi

I am happy to be able of communicating with he community again.  ( In he near past, I have had many problems to log in)

My PC has two booting disks. The one that came with the PC is a mechanical  HDD 1,5TB with windows 7 ultimate, but I very seldon start the PC from this but from a Kingston SSD with windows educaion 10 64 bits instead. For reasons of securiy is very easy for me to unplug the primary SSD, wrap it in aluminum foil to avoid statics and keep it in my pocket when I go out. Yesterday, I forgot to plug this primary and he PC started from the mechanical Win 7, without problems. I shuted down and in the process i did a forced shoutdown because there was a process, I didn't started, whose name I can not remember but it was something related with HP(HP info something). When I plugged he SSD I discover with horror that the PC  doesn't boot, freezing the boot process in the first black screen that ends in "Press the ESC key for Startup Menu". I pressed the ESC key and the system recognizes and signals the pressing but nothing happens.

Everything points to a corrupt  CMOS.  CMOS battery CR2032 gives a reading  of 3,07 Volts, so it doesn't seem to be defective inspite it can have more than 8 years for sure.

When I googled the Net, I found https://support.hp.com/us-en/document/ish_3966820-3438449-16#GUID-28EDE4A9-2695-4E0F-9079-105488008D... page,  I tried the general procedure for clearing the CMOS without sucess, because I couldn't follow the specific procedure for my PC product no. HOK38EA#UUW,  due to the technical info of the support page http://h10025.www1.hp.com/ewfrf/wc/siteHome has been deleed or supressed. Why do you do that HP? Can anyone help me? How can I efecively clear he corrupt CMOS table that BIOS can not read at POST phase?

Thank you very much

[Paul_Tikkanen]

Hi:

According to the product specs for your PC it has this motherboard.

HP and Compaq Desktop PCs - Motherboard Specifications, H-CUPERTINO2-H61-uA TX (Cupertino2) | HP® Cu...

Scroll down toward the bottom of the page, and there is a Jumper Setting section with the instructions to clear the CMOS.

[prometeo20082]

Hi

HP tecnical documentation is gaining aesthetic apeal but loosing relevant technical info with the pass of the time. I am now reading another post relating the same problem for a very close motherboard called Joshua  https://h30434.www3.hp.com/t5/Desktop-Boot-and-Lockup/H-CUPERTINO2-H61-uA-TX-Cupertino2-BIOS/td-p/79... and there I can see a conroversial between https://h30434.www3.hp.com/t5/user/viewprofilepage/user-id/2832782  Grzwacz and https://h30434.www3.hp.com/t5/user/viewprofilepage/user-id/1262999 Mdklassen.  Grzwacz points that it should be used  the next block of jumpers (yes I located them because they are very obvious)

but Mdklassen doesn't agree saying tha this only reset the RTC, but not the CMOS table that as I could read on the Neat it is not saved in a volatile memory bu in a flash RAM that resides inside the southbridge. So  Mdklassen talks about the raditional JBAT three pins jumper that has two position: normal and erasing. The problem is I couldn't locate this jumper in my mobo. The only thing that resembles but that intrigues me is the terminals without jumper F15 Flash override (what this name suggest you?) Should this terminals be jumpered by defect all the time and only removed in he case of a CMOS clear process? If so the things fit, someone has had to have access to the computer and remove that jumper becouse now is missing and the PC is in state of constant clear CMOS.

[Paul_Tikkanen]

Hi:

According to the instructions I posted for you, there should be one jumper that is supposed to always be on pins 1 & 3.

To clear the CMOS you remove the jumper from the default pins of 1 & 3 to pins 3 & 5, move it back and power on the PC.

So, if the jumper is not there on pins 1 & 3, something is not right.

If you have an old IDE hard drive or IDE CD/DVD drive laying around, those usually have jumpers on them which should fit where you need to have it on your PC's motherboard.

[prometeo20082]

Inspite of I need to give a scond ry the firs one has been useless.  The thing is more complicated as it seems to first sight (that alwasys happens in PC World) there is threath about other mobo https://h30434.www3.hp.com/t5/Desktops-Archive-Read-Only/bios-recovery/td-p/3079763  I ended there looking for info about the flash override jumper (BTW the time I shorted appeared a novelty in the screen the message "Date and Time not set") and I found a guy Lasvegaswireman https://h30434.www3.hp.com/t5/user/viewprofilepage/user-id/454605  that says: "

HP will not share their exact function with us.

Flash override connector
One touch reset connector
One touch recovery connector
BIOS recovery connector

so if he is right ha would be reason of the beautiful printed documentation BUT NOT COMPLETE AT THE SAME TIME,

Then again trying to find out more about this flash override I ended in an Intel CONFIDENTIAL document  https://composter.com.ua/documents/System_Tools_User_Guide_for_Intel_Management_Engine.pdf  about the ME firmware and I looked on page 99 paragraph 7 Firmware Update (FWUpdLcl) that there is an utility to falsh several unknown for me areas of the machine that needs a FORCERESET to make a FW update and that is what Unknownly did when I left windows 7. So I begin to feel pesimistic.

[prometeo20082]

More reasons to be pesimistic. I have found a very long threath of people with the same problem. Win10 and win7 are also present like in my case. https://h30434.www3.hp.com/t5/Desktops-Archive-Read-Only/Possible-bios-recovery-problem/td-p/5208527

Yes I tried several times to clear the CMOS but no way. The procedure I have used is to change position jumpers to remove the batery and back again but always with the ac cord umplugged. There are some people that say I need to plug and power the PC with the jumper in clear CMOS position for a while and then back to normal position. This Is the only think  I am going to try next. In the mean time noone of HP  remedy he poor technical information on jumpers uses. I have followed this document https://www.biosflash.com/e/bios-cmos-reset.htm 

[prometeo20082 · Accepted solution]

Hi guys

Finally! I've got it! I've got it. Trial and error with happy ending.

The procedure to clear  CMOS is to switch position of the two twin jumpers above referred jumper 11 in https://support.hp.com/us-en/document/c02978278 with the power cord UNPLUGGED and the computer powered off and then TURN IT ON with the jumpers in the new position you will see a pleasant message from  the BIOS that says: " Default BIOS options loaded" and then F1 to resume booting. After this you power off the computer, unplug que power cord and restore the jumpers to their original position and you can star booting the PC. The first thing you will need would be to set date an time and load BIOS default (factory options (just in the case) and from that point is a complete functional PC

[prometeo20082]

I was starting to feel like Carlos Sainz when going leader his car stopped 700 meters before the finish line https://www.youtube.com/watch?v=Q1BYdYztj08