HP 6735s dead after bios upgrade

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  • DS-1
    Senior Member
    • Jun 2015
    • 82
    • Italy
    #1

    HP 6735s dead after bios upgrade

    Hi guys!

    I have this 6735s that I upgraded from Vista to 7. I had the problem that I can't regulate brightness in Windows 7. Searching in the net, I've found that the problem was the outdated bios. I downloaded the last 2.1 bios release of this bios and did the upgrade thru FreeDOS (using ROMpaq.exe). The operation went to the end without problems.

    Maybe I did the mistake to reboot the PC with ctrl alt del and not shutting it down from the button. The PC restarted with black screen. After a couple of minutes, I shutted it down from the button and tried to turn it on again. From that moment, I only obtain AC adapter orange light blinking (with blue always on), while I only put the jack in and nothing more happens. No button or light works.

    Now I believe I have a BIOS corrupted in my PC. How can I try to reprogram it?

    Thanks in advance for the reply.
    Tags: None
    • dspok
      Badcaps Veteran
      • Jan 2014
      • 553
      • Nepal
      #2
      Re: HP 6735s dead after bios upgrade

      yes, BIOS is corrupt.

      someone is able to recover corrupt BIOS using BIOS Crisis Recovery using USB. See below link.
      http://www.systutorials.com/3022/hp-...bios-flashing/

      or you can use EEPROM Programmer and flash attached BIOS file.
      Attached Files

        Comment

        • DS-1
          Senior Member
          • Jun 2015
          • 82
          • Italy
          #3
          Re: HP 6735s dead after bios upgrade

          Originally posted by dspok
          yes, BIOS is corrupt.

          someone is able to recover corrupt BIOS using BIOS Crisis Recovery using USB. See below link.
          http://www.systutorials.com/3022/hp-...bios-flashing/

          or you can use EEPROM Programmer and flash attached BIOS file.
          Thanks for the reply, dspok!

          Unfortunately I can't use Crisis Recovery mode, because my 6735s won't boot at all. When I press the power button, nothing happens!

          Should I desolder the BIOS to re-program it? Can you tell me what programmer should I buy for this operation? Is there any diy programmer to assemble?

          What BIOS chip 6735s has?
          Last edited by DS-1; 06-24-2015, 04:50 AM.

            Comment

            • dspok
              Badcaps Veteran
              • Jan 2014
              • 553
              • Nepal
              #4
              Re: HP 6735s dead after bios upgrade

              @DS-1
              you can use any universal EEPROM Programmer but for this job done I use Top2011.

              see on ebay.
              http://www.ebay.com/bhp/eprom-programmer

                Comment

                • DS-1
                  Senior Member
                  • Jun 2015
                  • 82
                  • Italy
                  #5
                  Re: HP 6735s dead after bios upgrade

                  I'm from Italy, so I'm checking into the italian eBay page.

                  Is something like this good for this job?

                  http://www.ebay.it/itm/CH341A-24-25-...item51bc3fde34

                    Comment

                    • dspok
                      Badcaps Veteran
                      • Jan 2014
                      • 553
                      • Nepal
                      #6
                      Re: HP 6735s dead after bios upgrade

                      Originally posted by DS-1
                      I'm from Italy, so I'm checking into the italian eBay page.

                      Is something like this good for this job?

                      http://www.ebay.it/itm/CH341A-24-25-...item51bc3fde34
                      It may work but I'm not sure.

                        Comment

                        • DS-1
                          Senior Member
                          • Jun 2015
                          • 82
                          • Italy
                          #7
                          Re: HP 6735s dead after bios upgrade

                          Do you know what BIOS chip 6735s has? I will look for a programmer that can be used for that kind of chip.

                            Comment

                            • dspok
                              Badcaps Veteran
                              • Jan 2014
                              • 553
                              • Nepal
                              #8
                              Re: HP 6735s dead after bios upgrade

                              Originally posted by DS-1
                              Do you know what BIOS chip 6735s has? I will look for a programmer that can be used for that kind of chip.
                              as per schematic 6735s have SST25VF016B chip.
                              is your laptop AMD version?

                                Comment

                                • DS-1
                                  Senior Member
                                  • Jun 2015
                                  • 82
                                  • Italy
                                  #9
                                  Re: HP 6735s dead after bios upgrade

                                  Originally posted by dspok
                                  as per schematic 6735s have SST25VF016B chip.
                                  is your laptop AMD version?
                                  Yes, my 6735s has Sempron AMD processor and ATI 3200HD graphic card.

                                    Comment

                                    • DS-1
                                      Senior Member
                                      • Jun 2015
                                      • 82
                                      • Italy
                                      #10
                                      Re: HP 6735s dead after bios upgrade

                                      I've found this, too. It's from China. Is it that hard to desolder the BIOS from the motherboard?

                                      http://www.ebay.it/itm/EZP2010-High-...item2eb96ace7a

                                        Comment

                                        • sopik78
                                          Badcaps Veteran
                                          • Nov 2013
                                          • 517
                                          • Czech Republic
                                          #11
                                          Re: HP 6735s dead after bios upgrade

                                          The EZP2010 is sufficient. I recommend to buy a set of socket adapters for easy change SPI chips.
                                          The best way to desolder the chip is to use a hot air gun.

                                            Comment

                                            • ktmmotocross
                                              Boardkiller
                                              • Feb 2014
                                              • 3598
                                              • slovakia
                                              #12
                                              Re: HP 6735s dead after bios upgrade

                                              or u can buuy clip to program on board

                                                Comment

                                                • dj_ricoh
                                                  Badcaps Legend
                                                  • Jan 2013
                                                  • 2073
                                                  • uk
                                                  #13
                                                  Re: HP 6735s dead after bios upgrade

                                                  Originally posted by ktmmotocross
                                                  or u can buuy clip to program on board
                                                  It does not work.
                                                  I try and almost fry my usb where the programmer was.

                                                  He try to power the board trough usb lol.
                                                  Desolder read write solder it back and thats it.

                                                  I got clip because i dont wanna solder on adapter. So yee

                                                  I was thinking to try to read with notebook.on via a usb hub with psu.
                                                  Just cook it! It's already broken.

                                                    Comment

                                                    • DS-1
                                                      Senior Member
                                                      • Jun 2015
                                                      • 82
                                                      • Italy
                                                      #14
                                                      Re: HP 6735s dead after bios upgrade

                                                      Originally posted by sopik78
                                                      The EZP2010 is sufficient. I recommend to buy a set of socket adapters for easy change SPI chips.
                                                      The best way to desolder the chip is to use a hot air gun.
                                                      http://www.ebay.it/itm/291300736180?...%3AMEBIDX%3AIT

                                                      Can this work for what I need? It is cheaper.

                                                      Both programmers I've linked seems to have adapter to be used with SST25VF016B.
                                                      Last edited by DS-1; 06-25-2015, 05:30 AM.

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