Wiki met studentenbijdrage
Een geweldig team van studenten van ons onderwijsprogramma heeft deze wiki gemaakt.
Frequent Shutdown and Boot Up Failures
Random and frequent shutdowns when the laptop is on.
Overheating Fan
If the laptop gets too hot after being turned on, the fan may be damaged resulting in overheating. You will need to check that the fan is cooling sufficiently by opening up the bottom of the laptop and touch the fan. If the fan is too slow or has stopped moving, try using thermal paste between the heat sinks of the CPU and fan to cool it. If all else fails, you will need toreplace the cooling fan.
Faulty Outlets or Power Surges
If the laptop has a startup failure or the hard drive is unable to spin up, the required amount of power is too large for the backup battery or you may be connected to a faulty outlet. You will need to switch to another power outlet to see if the original was faulty, and if problems continue to arise, you will need to replace the battery.
Mechanical or Internal Failures
If the laptop completely freezes or you hear clicking or grinding sounds from the hard drive, you may need to update the system to the latest software by installing Windows updates. If the freezing screen and clicking noises continue, you will need to replace the hard drive.
The Screen Displays The Home Screen But Has Black And White Lines Over Parts Of The Screen
The screen is displaying black and white lines when the laptop is on.
Outdated Software
If the screen is displaying a section of the screen that’s completely black with white lines, you may not have the latest video drives. Download the latest HP video update and if the problem still occurs, you may have a broken LCD screen and will need to replace it.
Graphics Card Misaligned
If the screen is displaying a section of the screen with white lines, the graphics card may be out of place or loose. Open the bottom of the laptop and check to see if the graphics card is securely screwed and in place. If the problem still occurs, you may need to replace the graphics card.
Battery Unable to Charge
The Laptop Battery Isn’t Charging When Plugged In.
Loose Charging Cord
If the charger can't connect to the charger port or the power source, then the charger won’t be able to send an electrical current to the laptop. You will need to make sure both ends of the charger are pushed in correctly into the charging port and the outlet.
Faulty Charging Cord
If the charger has a tear or exposed wires on the cord, then the charger is hazardous and is broken. You will need to replace the charger.
Faulty Exhaust Fans
If the laptop has been shutting down and the temperature has been rising, then the laptop is preventing an electrical current going through to protect the laptop from overheating. You will need to check the exhaust fans to see if they're being blocked by opening up the bottom of the laptop and let it cool before charging it again.
Faulty Battery
To start replacing the battery, you will need to turn off the laptop, remove the battery from the folding edge at the bottom of the laptop, and connect it to the charger. If the computer turns on regularly, then the battery is faulty. You will need to replace the battery.
Unresponsive Keyboard
The screen will not display clicked keys.
Malfunctioning Keyboard
If the laptop’s keyboard is not responding on the screen, you can reboot your laptop to see if there was a software malfunction. Press the power button for one second or click the restart option from the Start menu to reboot the laptop.
Sticky Keys
If the keyboard keys are sticking or stuck, you may have sticky keys. You can remove the keys and clean them by removing the debris underneath. To remove a key you can use your fingernail or any small wedging device to gently extract the key. Proper materials such as cotton swabs and compressed air are useful in the cleaning process. If problems persist you may have a faulty connection between the keys and laptop, you will have to replace the ribbon cable.
Lockups and overheating immediately before PC shuts down
Noticed that computer had lock up instances before the final crash.
Overheating
A CPU has a built-in fan to keep itself cool. If it starts to overheat it’s best to clean the fan first before deciding to replace anything. If that won't work, check the BIOS to see if there's a way to lower its RPM.
Undue stress or over clocking
Overclocking can add stress to the unit, shortening its overall lifespan in the process. In other words, you are trading longevity of the CPU for more processing power, which is not entirely bad. If you have the resources to get a faster CPU though, we suggest that you do so instead of overclocking.
Faulty CPU
A CPU will work until it dies unless something drastic happens like a power surge, lightning strike, severe motherboard damage. If a CPU appears to be not working anymore, the best thing that you can do is to replace it with this link.
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