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Re: can u help plz?
Check the screen connections.If you have a graphics card in your PCI Exspress slot then your screen will be pluged into it ,remove the graphics card and plug it into the defult motherboard socket.Turn on . If you have a spare screen around plug it in and test. Test all of these ,depending on the results of any one of the solutions will i know the problem.
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Hearing fans and hard drive spin up doesn't necessarily mean system is working - just without video. If you heard a POST beep or the Windows Startup sound that would be different - and good. Is there any video on the screen at all, even just a blinking cursor in upper left of display? If not, your problem is probably hardware such as ram or motherboard. If this system has a VGA or HDMI output to connect to another monitor or TV would be a good check, but AIO system usually don't have that option. Other than that, and this is a shot in the dark: Ensure the system is off, disconnect the power plug, and hold the power button in for 30 sec for a power reset. Then plug in system and try powering it up again. If no go, you may have a hardware problem and will need a PC Tech. Hopefully it is just loose ram.
Did it boot all the way? Do you hear the fan running, disk drive spinning? If it sounds like it booted but the display is black, try this: When you press the power button do you hear fansrunning, hard drive spinning, lights on the computer, hear any beeps or lightsconstantly blinking, hear the DvD/CD drive click and the light on the drawer ofthe DvD/CD turn on for a second or two? If so the laptop is trying toboot or may have booted, but the screen is not showing for some reason.
Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.
You'll first want to make sure that BIOS would load. Turn the MB on with only the memory chips, video card, and CPU (with fans). You'll need to add/remove individual components to isolate the issue. Make sure that the cases's wires are connected to the correct pins on the MB.
Since you reference "appears", you might be referencing seeing your volume display showing sound emitting. That would probably be either your microphone is turned on and it's picking up noises, sounds, ambiance.
Or you might have a device plugged in or connected via Bluetooth that is emitting audio.
Or you might be hearing the hard drive spin occasionally while other times
it is idle. In addition, your power supply fan will turn on when you start up your computer. Some fans will automatically turn off if the power supply is cool enough.
If you are sure the computer is running then connect an external monitor to the laptop. You will have to select the external using your Function keys FN + F7 or F8. If you can now see your machine on the external monitor then you know it's the screen portion of your laptop that is faulty. If this does not work then the sounds you are hereing are probably just the fan and the hard drive spinning. These are not an indication that the computer is working. All in all, I would say that the laptop needs to see a pro.
the very first thing that u can try is that try it with the different ac adaptor and the battery and try it with the differnt ac aaaadaptor and still it doesnt then wahat u said is that u can hear the sound of the fan and the disk is trying to read but u cannnot see anything on the screen adn all u need to clearify is that if the computer is actually running or not and if it is working then what u can do is that connect the external monitor and then try and turn on the laptop and if u get a good display in te external monitor then definately replace the lcd screen and also what u can try is that try and reboot the computer in the safe mode and if turns on and u can see the display in the screen then do the system restore and it will be fine.......and as u said that u get a choppy sound from the fan then what u can do is that try and clean the fan from the back or by opening it......anbd it will not get any sound from the fan......good luck....