Bsod-couldn't boot in to bios -shows flashing white hyphen like light

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  1. Posts : 47
    windows10 pro
    Thread Starter
       #11

    zbook said:
    These links display POST troubleshooting steps:

    What is POST?
    Computer POST and beep codes
    POST troubleshooting steps

    Thank you for the new information, unfortunately my computer is not making any beep sounds at all.
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  3. Ztruker's Avatar
    Posts : 13,512
    Windows 10 Pro X64 20H4 19042.746
       #13

    You said "*Removed the Ram, Re inserted ,then tried to power up..nothing happened." I didn't see where you tried one memory DIMM at a time, which is why I suggested it.
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  4. Posts : 47
    windows10 pro
    Thread Starter
       #14

    Ztruker said:
    You said "*Removed the Ram, Re inserted ,then tried to power up..nothing happened." I didn't see where you tried one memory DIMM at a time, which is why I suggested it.
    Totally 4x4 memory removed two first the tried it , which i added extra . Just waiting to check with the spare monitor to see if the display comes there.

    - - - Updated - - -

    Thank you ,will look that, i did have windows 10 Bootable USB stick. In order to change the boot order,also i have the orginal resource DVD, as per the instructions on microsoft website i have to go in to Bios to change the boot order,but i couldn't go there/ Trying to connect to a external monitor or Tv to see if the display comes up there..last time the shop which updated the windows 10 after repairing charging port stuck with the same issue after updating to windows 10,that time screen comes up when its connected to the external monitor!!
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  6. Posts : 47
    windows10 pro
    Thread Starter
       #16

    Good evening friends,

    Finally managed to connect to a external monitor, guess what the display came there!( Exactly this what happened when the repair shop installed windows 10 ,later they gave me they couldn't figure out why the display coming in external monitor and not in the laptop screen!!- i don't know what happened when i restart the computer the display came and it was working till now having the same problem again!)


    After the display came i managed to install fresh windows (Still its not booting in to bios, did installation through usb).

    *After the installation computer restarted (still connected in external monitor) but stuck in the windows logo screen with rotating dots!

    *So now the main problem is something prevents windows not coming up in the laptop screen( nothing wrong with the screen) but comes in the external monitor!! Even the repair shop last time they couldn't figure it out why?


    Any suggestions pls, thank you.
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  7. TV2's Avatar
    TV2
    Posts : 1,771
    W10 Pro 20H2
       #17

    On that laptop, Asus G74SX, whether you have the i7-2630QM or the i5-2410M processor, you have two graphics options. The Intel Graphics 3000 on the CPU, and the Nvidia GTX560M module on the motherboard.

    It seems that there is a conflict between the two graphics 'cards'. The BIOS should defer to the Nvidia graphics for the laptop screen and an external monitor. It seems that the laptop screen is not getting signal from either graphics card.

    Normally you would control this in the BIOS settings by disabling the Intel graphics. . But since you can't get into the BIOS you are stuck. We need to focus on getting into the BIOS before anything else.

    Question: can you see the BIOS screen on the external monitor?

    One method to reset a laptop BIOS (similar to a Clear CMOS/ClearRTC on a desktop) is to remove the laptop battery, unplug the charger, remove the 3v coin battery on the motherboard. Then press and hold the power button for a good 15-20 seconds. Then put the batteries back in and see if you can boot into the BIOS settings.

    There is also this below. But use caution. If you don't see these exact labeled solder points then abort!
    Hard CMOS Reset Solution - For dead G75VW

    There is also a possibility that the laptop screen is dead. But you don't want to go there until you have solved the BIOS problem.
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  8. Posts : 47
    windows10 pro
    Thread Starter
       #18

    TV2 said:
    On that laptop, Asus G74SX, whether you have the i7-2630QM or the i5-2410M processor, you have two graphics options. The Intel Graphics 3000 on the CPU, and the Nvidia GTX560M module on the motherboard.

    It seems that there is a conflict between the two graphics 'cards'. The BIOS should defer to the Nvidia graphics for the laptop screen and an external monitor. It seems that the laptop screen is not getting signal from either graphics card.

    Normally you would control this in the BIOS settings by disabling the Intel graphics. . But since you can't get into the BIOS you are stuck. We need to focus on getting into the BIOS before anything else.

    Question: can you see the BIOS screen on the external monitor?

    One method to reset a laptop BIOS (similar to a Clear CMOS/ClearRTC on a desktop) is to remove the laptop battery, unplug the charger, remove the 3v coin battery on the motherboard. Then press and hold the power button for a good 15-20 seconds. Then put the batteries back in and see if you can boot into the BIOS settings.

    There is also this below. But use caution. If you don't see these exact labeled solder points then abort!
    Hard CMOS Reset Solution - For dead G75VW

    There is also a possibility that the laptop screen is dead. But you don't want to go there until you have solved the BIOS problem.
    Bro! Thank you lot, i don't know how you came across that link..i am sure that's new for anybody struggling with this similar issues.

    *It's having the I7-2630QM
    *Nvidia 560 M graphics card.

    *No bios didn't come on the external monitor! Actually i kept a usb with windows 10 stick to it, when it turns on the external monitor it said there is no operating system( i had an plain ssd on it),when i removed the ssd and re-started it went straight to the USB stick to load installation of new windows 10, at the moment i attached the SSD and installed the windows 10 pro on the SSD. After installation Windows 10 asked to restart, that time i removed the USB stick and restarted,but stuck in the windows logo with rotating white dots.


    *I did removed the BIOS Battery and done what you have mentioned before,it did worked 1 time ,that's time i used that chance to (Thinking may be driver problem) update all the drivers etc, windows update etc. After that i tried to start nothing happend.

    So its clear something screwed up the BIOS when the repair centre installed the windows 10. As you mentioned getting in to the BIOS is the priority! what happens if i replace the motherboard? (In case if i come across cheap motherboard of exact model!! Quite rare bcoz this is 3d laptop- G74SX-91234Z Laptop (Intel Core i7-2670QM, 8GB RAM, 1.5TB HDD, 17.3" 3D Display).

    Thank you so much once again
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  9. TV2's Avatar
    TV2
    Posts : 1,771
    W10 Pro 20H2
       #19

    Well replacing the motherboard is an extreme option but I suppose it could solve the problem. But I would consider that my last option.

    What I like to do in these kinds of cases is to simplify the system. Too many variables make the troubleshooting way too complex.

    If you are comfortable working inside the laptop:
    • Disconnect everything connected externally: USB, SD cards, everything.
    • Open the optical drive (if you have one) and check for any disk in it (you'd be surprised how many times this is a cause)
    • Remove the laptop battery. (the big one)
    • Open up the case and remove the hard drive. (I assume there is only one).
    • Replace the battery
    • Turn on the laptop.


    The system will not startup of course, but you should/may get an error message that is telling you that no bootable operating system is found (duh!). You can restart the system as many times as you need. Press and hold the power button until it goes off, then press again to turn on.

    Now try and get into the BIOS settings. Let us know what happens.
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  10. Posts : 47
    windows10 pro
    Thread Starter
       #20

    TV2 said:
    Well replacing the motherboard is an extreme option but I suppose it could solve the problem. But I would consider that my last option.

    What I like to do in these kinds of cases is to simplify the system. Too many variables make the troubleshooting way too complex.

    If you are comfortable working inside the laptop:
    • Disconnect everything connected externally: USB, SD cards, everything.
    • Open the optical drive (if you have one) and check for any disk in it (you'd be surprised how many times this is a cause)
    • Remove the laptop battery. (the big one)
    • Open up the case and remove the hard drive. (I assume there is only one).
    • Replace the battery
    • Turn on the laptop.


    The system will not startup of course, but you should/may get an error message that is telling you that no bootable operating system is found (duh!). You can restart the system as many times as you need. Press and hold the power button until it goes off, then press again to turn on.

    Now try and get into the BIOS settings. Let us know what happens.
    Thank you so much again for reply,

    i am not expert, yes i ma comfortable working inside the laptop,done quite lot of times.

    I did all the stuff you mentioned, hard drive removal, BIOS battery, replacing bios battery, removing ram, hard drive etc.

    only thing which i done yet is the HARD RESET OF BIOS you have mentioned in the link!

    As you mentioned have to find a way of getting in to the BIOS.

    Guess what ,my spare laptop Lenovo 910 doing the exact thing now after i spilled a splash of water!! End of lockdown i will be mad soon!
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