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Blue-screen errors can have many different causes, and can be intermittent or reproducible, but either way, they’ll ruin your day.
Errors on Hard Disk
If you experience a blue-screen error that recurs at the same point every time, you may have errors on your Hard Disk. These can be caused by powering-off the device, rather than using the shutdown process. You should perform a hard disk scan. This process can be started in Windows and can take several hours, but it often resolves these issues.
Physically damaged Hard Disk
If, after scanning your Hard Disk for errors, you are still experiencing blue-screens, your Hard Disk has probably sustained physical damage, and should be replaced. Follow <this guide> to swap out your HDD.
Faulty RAM modules
If you are experiencing intermittent blue-screens, and the device is not hotter than usual, you could have faulty RAM. Follow <this guide> to replace the RAM.
Overheating can cause the CPU to make miscalculations which lead to random Blue-screen errors while using the device. If you notice the device is hotter than usual and you have not heard the fan running, you should follow <this guide> to replace the CPU and Fan.
They keyboard is a vital part of any computer. You won’t be very productive if you have broken or missing keys, stuck keys, or if none of the keys work.
Sticky or Broken keys
If only a key or two doesn't work, you may have debris lodged under the keys, preventing them from depressing. You can try holding the keyboard vertically and use canned air to blast the debris loose. If they still don’t respond, or you have key caps that have fallen off, you’ll need to do some repairs. <This guide> will help you remove, clean, and replace individual keys.
If none of the keys on your keyboard work then it may have sustained physical damage, such as liquid spills. Follow <this guide> to replace your keyboard.
Display Does Not Work
Your computer's display is very important. It is the projecting mechanism that shows the text and graphics of your computer.
Video card Faulty
Plug the laptop into an external monitor. If the external monitor is also not working with the laptop, the internal graphics card is defective and not the display. You may need to replace the graphics card or motherboard.
Does Not Power On
If your computer is not turning on, that is very bad because without your computer being on you cannot use it.
The Battery is Dead
Your laptop battery is at zero. Connect the AC adapter, ensure the adapter cord is correctly plugged in on both ends, and let the laptop charge.
An issue with overheating may be due to dust or dirt build-up on the fan of the laptop, heat sink or vents. You can try using canned air to blow the dust and dirt out and make it easier for the laptop to expel the excessive heat that is being generated.
USB Ports not working
The USB ports are essential for connecting other devices and transferring information.
USB Driver Outdated
The USB driver could be outdated. You will need to go into Device Manager and reinstall the USB driver. Then, restart the computer.
USB Ports Short-Circuited
In this case, the connections inside the USB ports have shorted and the ports themselves will need to be replaced.
Touchpad Not Working
The touchpad is essential to navigating information on your computer and eventually it could fail or another problem could corrupt it.
Dead CMOS Battery
If the CMOS battery is dead it can lead to the computer overheating and other problems like the touchpad not working. The CMOS battery will need to be replaced.
The touchpad hardware itself may be broken and will need to be replaced.