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Hp pavilion dv6-2007so should i replace bios chip?

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    #1

    Hp pavilion dv6-2007so should i replace bios chip?

    Hi, im getting 2-2-2-2-2 blink code from caps lock on this laptop. On hp site it says bios corruption failure. completely black screen with dvdrom fan etc working fine.
    Tried hard reset, checked mobo for bad connections, new thermal paste and cleaned fan and even tried replacing CPU and usual ram slot swapping and testing for bad stick. no picture on external monitor.

    Tried use hp 3in1 usb for bios recovery. usb starts blinking after i press windows key + b on startup. Then laptop starts beeping short beeps for around 20-22 times, for 25s. Then suddenly it shutdown and again 2-2-2-2 blink code continues. Tried all ports and numerous times with different bios versions.
    USB sticks i tried are 1gb + in size, and hp 3in1 usb needs atleast that space for stick.

    Should i replace bios chip next or could it be someting else? Mobo seem to give good voltages, and it detects when i remove ram. wrong cpu blink code etc are working fine.
    Tags: None
    #2
    Re: Hp pavilion dv6-2007so should i replace bios chip?

    Ok
    So why not desolder the bios chip and reflash?
    Just cook it! It's already broken.

    Comment

      #3
      Re: Hp pavilion dv6-2007so should i replace bios chip?

      flashers are only a few $ on ebay - literally.
      just search "CH341"

      make sure you can get a bios dump first - it's not the exe from HP.

      Comment

        #4
        Re: Hp pavilion dv6-2007so should i replace bios chip?

        thanks for suggestion.
        Is this good model?.. looks really cheap and i get it in week or two:

        http://www.ebay.co.uk/itm/24-25-Seri...item5d540aa2d6

        Also dont have any hot air station. Just heat gun with big mouth piece, some desoldering braid and flux for electronics and infrared thermometer.
        Do i need anything else to do this?

        So basically i need someone with this EXACT model with working bios to give me dumb file which i can program to chip?

        thx if you can answer these dumb questions =)

        Comment

          #5
          Re: Hp pavilion dv6-2007so should i replace bios chip?

          2 blinks on hp dv6 never has anything to do with the BIOS although their code says so. You need to reball or replace Northbridge.
          Originally posted by PeteS in CA
          Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
          A working TV? How boring!

          Comment

            #6
            Re: Hp pavilion dv6-2007so should i replace bios chip?

            http://www.ebay.co.uk/itm/301578296864

            although it looks like it may not be needed.

            Comment

              #7
              Re: Hp pavilion dv6-2007so should i replace bios chip?

              Well basically i have no idea if my hp usb 3 in1 flash actually worked cause cant see any picture. It takes 20 beeps and maybe 20-25s,... then it shuttdown and blink code starts again, is that enough time for flash?

              I will order that programmer anywya to test.. might come in use later atleast if its not working. If i use around 220c from heat gun to melt solder.. could that destrouy small components around chip?
              Only have tin foil to cover around chip.. last time i tried reflow gpu it still flew few small componetns off board. i know now was using too much air flow.

              btw bought preprogrammed bios chip to remove bios pw from 6720s ( i know im noob now after learning about programmer ).. theres few chips on board like it, dont know how can i recodnize it.. 1 chip is same size and it says in small print:

              MX -15G
              25L8005M2C
              A031314

              Comment

                #8
                Re: Hp pavilion dv6-2007so should i replace bios chip?

                replaced it with preprogrammed hp compaq 6720s bios. trying to boot now it goes black screen, fan starts up, no blink or beep code. dvd has green light but odd reading sound what repeats. external monitor nothing
                Didnt seem to burn any components though, all are in place atleast, cleaned flux. i forgot processor in socket though.. it was other side of board almost, can it stand around 100-150c if system if off? i dont get 1-1-1 beep code which means bad processor

                Comment

                  #9
                  Re: Hp pavilion dv6-2007so should i replace bios chip?

                  Could be also i soldered bios chip wrong way in, pin1 on other side. Anyone failed this bad? Are symptoms matching?
                  thx

                  Comment

                    #10
                    Re: Hp pavilion dv6-2007so should i replace bios chip?

                    If you soldered the BIOS the wrong way it would not start at all. But anyway, what are you doing with a 6720s BIOS in a dv6?
                    Originally posted by PeteS in CA
                    Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                    A working TV? How boring!

                    Comment

                      #11
                      Re: Hp pavilion dv6-2007so should i replace bios chip?

                      Sorry i been too busy to even check what i write. Was talking on same post about other laptops bios chip replacment ( hp compaq 6720s ). Nothing to do with dv6 issue.

                      Couldnt get bios password removed from hp compaq 6720s by any method. Bought preprogrammed ( for 6720s ) chip from ebay and soldered it in. Explained symptoms what i got in later post. So if bios chip isnt wrong way in, could one pin have loose connection or someting like that?

                      When i press windows key + B key or use hp diagnostic usb tool, caps lock starts blinking like it would start flashing. When i remove ram it wont give even any beep message, only time i can get it to blink is use windows + b key.

                      what you think went wrong?

                      Comment

                        #12
                        Re: Hp pavilion dv6-2007so should i replace bios chip?

                        Looks like my heatgun method for bios chip replacment sucked hard,
                        component R374 missing
                        R9640 .. dunno if here was even component
                        and 3 components between wifi / bios chip

                        although i have one completely dead hp motherboard, dunno if i can find spare components there, do i need to replace every single component to get it working again? also no freaking idea how.. i have pretty good solder iron but tips arent that thin.





                        Comment

                          #13
                          Re: Hp pavilion dv6-2007so should i replace bios chip?

                          I think ill can help with that tomorrow.

                          I got a dv6 home and maybe its the layout.


                          And the guy with plug in not charging
                          Just cook it! It's already broken.

                          Comment

                            #14
                            Re: Hp pavilion dv6-2007so should i replace bios chip?

                            my pictures where from hp compaq 6720s which had bios password which i tried to remove with replacing bios chip. Looks like i blew some components off board when replacing bios chip.


                            back to dv6: reflowed 2 gpus and southpbridge, and still dont work.. 2x bios corruption blinking continues.

                            Are there another method on replacing bios chip WITHOUT heatgun or rework station / hot air station, dont want to mess another board with heatgun..
                            Just with soldering iron and desoldering braid? dont want to try again cause i fuck everything i touch lol

                            Comment

                              #15
                              Re: Hp pavilion dv6-2007so should i replace bios chip?

                              O yes!
                              Even with a hot nail.

                              We will talk tomorrow
                              Just cook it! It's already broken.

                              Comment

                                #16
                                Re: Hp pavilion dv6-2007so should i replace bios chip?

                                From now on, leave the southbridge alone on 2 blink. In fact, i have NEVER, not even once had a southbridge issue on these boards.

                                The Northbridge chipset may be defective, and reflow/reball will not help any. I have had several boards which required replacement of the NB. It sucks because it can fail without going short, which means that unless you have a new chip to try and the equipment to solder it, it's impossible to figure it out.
                                Originally posted by PeteS in CA
                                Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                                A working TV? How boring!

                                Comment

                                  #17
                                  Re: Hp pavilion dv6-2007so should i replace bios chip?

                                  Too late already reflowed again southbridge / northbridge /gpu. 2nd time i used liquid flux under chips.. and washed away with alcohol.. didnt use much heat at all.. when flux started boiling i went for maybe 5 more secs.
                                  Booted up and same 2 blink continues and maybe 1/5th time i boot it goes 1 blink continuously.
                                  Light above touchpad and one light in front panel.. ( lightning mark ) besides disk light are very weak compared to caps lock and numlock lights. that happened before also. On other hp board those are very bright.
                                  Only thing what change is that when i boot up and put bios flash usb in it wont read it at all.. no shuttdown etc after i plug it in and try to flash. It still detects no ram with beep sounds so dunno what happened.
                                  I have 2 almost same model boards.. dv6-2007so and dv6-2004eo same chips etc.



                                  Btw on another topic.. did red circles on this 6720s compaq i replaced bios chip, on spots where i think components are missing.. you agree guys?

                                  http://s7.postimg.org/60u04p0az/saved.jpg
                                  Last edited by goodguy91; 08-29-2015, 01:08 PM.

                                  Comment

                                    #18
                                    Re: Hp pavilion dv6-2007so should i replace bios chip?

                                    Sounds more and more like bad NB. It will still detect the RAM if it's not present because the memory controller is inside the CPU not the Northbridge.
                                    Originally posted by PeteS in CA
                                    Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                                    A working TV? How boring!

                                    Comment

                                      #19
                                      Re: Hp pavilion dv6-2007so should i replace bios chip?

                                      Ok, thanks for info. Well i have another laptop dv6-2004eo with different issue. Board looks nearly exactly the same. This one boots fine to windows 7 maybe 40% time and works well.. odd thing is 60% time i boot it does black screen, fans running, detects dvd but volume light doesnt go blue, same as wifi.
                                      First thought this must be failing gpu and people told me it could be wifi card not matching HP bios.
                                      Tried to troubleshoot with only motherboard and without anything, not even cmos battery or ram.. again 40% of time it starts yelling ram missing beep. but 60% of time it wont even detect that ram is missing. So if memory controller is inside cpu and it cant be gpu.. what the hell this can be? upgraded and downgraded bios succesfully few times and same thing happens still. When this happens im not getting ANY beep or blink code.

                                      Comment

                                        #20
                                        Re: Hp pavilion dv6-2007so should i replace bios chip?

                                        Looks like you know alot from these dv6 laptops. Is there any change 2 blink on dv6-2007so which didnt even resolve after reflowing 3x is really bios corruption? I could try reflash it when my usb eeprogrammer comes.. about a week.

                                        And in my post before this i posted picture after compaq 6720s bios chip replacement, dont have schematic, are those componets missing at red spots? Or do you find someting odd in soldering of bios chip?

                                        thx

                                        Comment

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