Wiki met studentenbijdrage
Een fantastische student van ons educatieprogramma heeft deze wiki gemaakt. Deze wordt niet bijgehouden door het team van iFixit.
- Computer Will Not Turn On
- Unexpected Shut Down
- My Screen is Blank or Dim
- Only Certain Elements are Showing
- The Screen is Cracked or Damaged
- Missing, Stuck, or Unresponsive Keys
- Distorted or No Sound
Computer Will Not Turn On
Pressing the power bottom yields no response or the computer will not boot up Windows.
Hard Drive Error
If your computer turns on, but does not boot up windows, there is likely a hard drive error. First, you should reinstall the Windows operating system. This can be done by getting a Windows DVD for your version of Windows and following the Repair instructions on the disc. Once you have had to do this more than twice, you should replace the hard drive.
Out of Battery
If there is no response when you hit the power button, then the battery may be dead. To solve this issue, try charging the battery. If the battery does not charge, there could be an issue with your charger or the battery. If you think that the problem is the charger, try another one. If the battery still does not charge, it is likely broken. The battery is built into the computer and can only be replaced by opening up the computer.
Unexpected Shut Down
Your laptop suddenly powers down with no explicit warning.
The BIOS, or Basic Input/Output System, is a hardware-specific system that controls how a computer turns on before loading the operating system. Updating the BIOS could solve these problems because it improves how your system interacts with the hardware.
The equipment has a built-in process to handle overheating. When the computer is too hot, it automatically starts slowing down. This can lead to the computer shutting down to prevent further damage.
- Dust: Over time, dust particles and other substances can build up inside the computer, like bad cholesterol within the bloodstream, and block the fan. To prevent this, regularly clean up your computer.
- Faulty or Damaged Fans: On the bottom and sides of the laptop, there are a few vents that let out air. Turn on the computer. If you cannot feel the airflow, the fan is likely broken and needs to be replaced.
- Old Thermal Paste or Semi-Connected Heat Sink: A heat sink absorbs the excess heat given off by the CPU. Thermal paste is an adhesive that helps conduct heat between the CPU and the heat sink. Over time the thermal paste dries up, reducing its ability to conduct heat away from the CPU to the heat sink. The solution is to replace the thermal paste and reconnect the heat sink.
My Screen is Blank or Dim
The computer does not display images or is dim.
Computer Screen is Blank
Your computer may be in sleep mode. If you want to “wake” your computer up, you can touch the touchpad, press the any key on the keyboard, or press the power button.
Computer Screen is Dim
You can try changing the brightness level of the display. Your computer may have low battery power. When the battery is low, the screen dims to conserve energy. Lastly, you can try downloading the latest video driver.
The computer turns on, but nothing is displayed. It could be a problem with the RAM, video card, graphics card, or the heat sink. To fix the heat sink, you can replace the thermal paste or replace the heat sink. If the problem still persists, there may be a complication with the CPU or motherboard. Therefore, a replacement might be needed.
Only Certain Elements are Showing
The images that are displayed are wrong or unexpected.
Only a White Cursor
If your screen is blank and only shows a white cursor, then you should restore the files by using the Lenovo OneKey Recovery System.
Faint Image Display
If you can see faint images on your LCD screen, then the laptop might be acting like it is in the “closed/folded” position. Check the LCD lid close switch; it is located on the back LCD hinges as a small plastic pin. Tap the pin a few times to try to trigger the screen back-light.
Dead or Stuck Pixels
A dead or stuck pixel is a pixel that does not function like a normal pixel.
Hands On Solution:
- Find the dead or stuck pixels on the screen.
- Pick something dull like a pencil eraser or stylus.
- Wrap the stylus with a damp, scratch-free cloth.
- Turn off the screen.
- Apply pressure using your tool to the affected area for 5-10 seconds multiple times.
- Turn the screen back on and see if the pixels have been fixed.
If the previous method didn’t work, select the solution best suited for you.
The Screen is Cracked or Damaged
Your computer screens are not in working order. The problem could be the touch screen not functioning properly or the screen is cracked.
Touch screen is Unresponsive
The digitizer on the screen may be broken. The digitizer is a screen that makes the laptop's screen responsive to touch, and is attached to the LCD screen behind the protective glass screen. It can break if you drop the laptop or apply pressure unevenly. The digitizer must be replaced together with the LCD screen.
Screen is Cracked
There is a protective glass screen in front of the digitizer and LCD screens on the laptop. This screen can be damaged without the digitizer or LCD screen being damaged. If the computer still responds to touch and video quality is not disrupted, then only the protective screen is damaged. The protective glass screen can be replaced.
LCD screen is Damaged
The LCD screen is the laptop's color display. If video quality is disrupted or the picture quality is particularly bad, then the LCD screen is damaged. The LCD screen can be replaced with the digitizer.
Missing, Stuck, or Unresponsive Keys
Keys are missing, stuck, or not responding.
Loose or Missing Keys
Loose or missing keys, while not necessarily stopping function, are unsightly. Fortunately, the keys themselves are just plastic parts that can be replaced.
Key is Stuck Up or Down
There may be some dirt, sticky liquids, or other material underneath the key. The plastic key holder might be bent or out of place. This can be fixed by taking the key off, cleaning underneath, and putting the key back in correctly.
The keyboard could be connected poorly, knocked out of place, or broken. Carefully remove the keyboard and then reinsert it. If it still does not work, the keyboard might be broken and may need to be replaced.
Distorted or No Sound
The sound coming from the laptop is distorted or nonexistent.
No Sound is Coming from the Laptop
First, make sure the volume level is not muted or at 0%. If the volume is not muted, but you still cannot hear any sound, make sure your sound card is properly installed and has the proper drivers. If the problem persists, consider replacing your sound card.