Question about Computers & Internet
When i start my laptop,it working 5 minute normal then the display turn to white.i don't know why?
What can you do if the laptop LCD screen turned completely white? 1. Loose connection between the video cable and the LCD screen.
2. Defective LCD screen.
3. Defective motherboard (I assume the graphics card is integrated into the motherboard). Here's an example of a laptop with white screen. When you turn on the laptop, it starts but the image on the screen is completely white right from the beginning.
Most likely you still can use the laptop with an external monitor. Just connect the monitor to the VGA port on the back or side of your laptop and then switch the video output from internal to external mode.
On Toshiba laptops you can toggle between internal and external screens using Fn+F5 keys. Hold down Fn and press on F5 until you get video on the external monitor.
On IBM laptops use Fn+F7.
On HP laptops use Fn+F4.
It's possible that you have to use a different key combination on your laptop but you get the idea.
On some laptops, in order to be able to use the external monitor, you have to connect it to the laptop and then restart the laptop so the external monitor is detected by the laptop. In some cases the laptop screen may turn white because of poor connection between the video cable and the LCD screen. If you want to check this connection, you'll have to take apart the display panel because the connector is located on the back side of the LCD screen.
These laptop service manuals and disassembly instructions may be useful. Always check the video cable connection first. Reconnecting the video cable may fix your problem.
If reconnecting the video cable doesn't help, most likely you have a problem either with the LCD screen or with the motherboard. The best way to find out witch one is causing the problem is testing the laptop with another working LCD screen. you will need to connect to another monitor or your television to your computer with the vga lead monitor connection click start control panel display change display settings adjust resolution this may vary depending on your operating system you should see a no 1 and a no 2 with detect and identify keep an eye on the screen when you select the number tabs this may vary depending on your operating system when you select the no 2 tab this should be the extended desktop always click apply after making any changes or click start control panel administration tools computer management device manager scroll to monitors right click select scan for hardware changes if you can get an extended desktop your monitor is faulty if you cant get an exended desktop Hope it helps
Posted on Jan 23, 2013
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Posted on Jan 02, 2017
This must surely be a problem with your monitor, because you say that you see the white screen while boot up. If this is a graphic driver issue, you may have the problem after booting up in windows. Since its been only a month old laptop, the product must be in warranty for sure. Take away any CDs in the drive, any USB drives and see if this white screen appears. Let us know.
Posted on Jun 26, 2009
This is an Hardware Failures: Doesn't Boot Up.
First of all, most of the hardware failures that are going to be presented in this article require you to disassemble the laptop and work on its internal components. Because of this, you need the required components to take the laptop apart (such as screwdrivers, etc.) and space, lots of space. If you don't have a workbench, then working on that large table in the living room should do it.
Second of all, you need to be extra careful about ESD (electrostatic discharge). Sure, this is important when working with a desktop system too, but you really shouldn't consider this as some sort of overreaction or waste of time. A few anti-static conductive bags should suffice. These are going to be useful when you take apart components from the laptop and you need a safe place to put them down.
Now let's begin. If the laptop does not power on using the batteries, then try to power it using the AC adapter. Pay attention and see whether the LED on the laptop lights up, signaling that the adapter was detected. If yes, then your power jack works. If the notebook still does not power on, disassemble the laptop and remove the batteries. Look first for the CMOS battery and take it out.
If your particular laptop model has more than one battery, like a multi-port battery or a handle battery, then take those out too. This should serve as a master reset. Try powering on using the AC adapter. If it still does not power on, then read on.
Your best bet is that the problem is memory-related. What you need to do is re-seat the memory modules. If there are more than one, then try swapping them between each other and try different slots. Try booting again. If it does not work, then try running with only one module - this way, you can tell whether one is faulty.
Narrow down the problem by removing each "unnecessary" component. Disassemble the laptop and remove the HDD, CD/DVD drives, and the modem and/or wireless card(s). If possible, take out the sound card module (if separate). To minimize the possible causes, you may disconnect the LCD panel as well. Try running this way. If it does boot, then try connecting each connector one at a time, booting up in between to localize the problem.
On the other hand, if you have stripped it down to a bare-bone laptop and it still refuses to POST, then chances are your motherboard might be the root of the problem. Another option is temporarily replacing the memory modules with good ones. This way, you can eliminate that from the list of possible causes. This leaves the motherboard and CPU. Take apart everything; re-seat both the CPU and motherboard. Try again.
As a last resort, if you are familiar with using a multimeter, then try checking the power button and see whether it actually "switches" or not. You may also monitor the voltages during the VRM circuitry (whether or not it gets power). Verify the resistances between the common places (such as verifying whether the motherboard is grounded or not - you know, those metallic rings near the screw holes).
Nevertheless, if you still can't diagnose the problem and the laptop gives absolutely no sign of life, then take it to a repair center. But chances are that you have found it by now, at least let's hope so. Now let's talk about other problem scenarios.
If your notebook always "forgets" the system clock, then it is almost always a faulty CMOS battery. Disassemble the laptop, locate the battery, measure it with a multimeter or voltmeter, and, if need be, get a replacement. If your laptop powers on but beeps like there's no tomorrow, then those "beeps" stand for an error code. Find out which BIOS your notebook has (perhaps it's not AMI, Award, or Phoenix). Then do a quick Google search to find out what those beep codes stand for on that particular BIOS version. More often than not, it indicates a memory-related problem. As I suggested earlier, try re-seating and playing around with the modules.
Good luck!Thanks for using fixya.
Posted on Sep 04, 2009
I have an ACER extensa 5630 laptop with the same white screen problem. I found the wiring connecting the LCD and mother board was the problem. Several ground wires from the LCD were wrapped, but not soldered, around another wire from the microphone which then goes to the connector for the motherboard. You will need to remove all the tape wrapped around the wires starting from the motherboard connector to about 3 inches back.
Posted on Oct 24, 2009
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Possible that PC is hanging up as there is fault on the OS (operating system) or a virus in the OS. Also it is possible that the backup battery (CMOS) has low voltage or the memory card is a suspect. In this case you need to check the voltage and also try and swap a memory card. Sometimes the memory card connections can be faulty either on the card or on the slot. Cleaning the slot and card must be done before you try a replacement. If the PC boots and fails then the hard disc can have bad sectors or is corrupt. However if there is no result the motherboard also can be suspected. In this case you might need the help of proper tools and equipment support to do a chip level service.
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