Laptop Won't Turn On
Loose or Disconnected Power Cable/Charger
One of the most common reasons a computer won't turn on is because it doesn't have a working power supply. Check to see if your power cable is faulty by trying to turn on your laptop while it is plugged in with a different charger. If a different charger works with your laptop, your charger is most likely broken. Also verify that the power cable is plugged into a functioning outlet.
Broken Power Button
If your power button is broken and can no longer send signals, your laptop wont be able to start up. Check to see if the power button is functioning by pressing it and seeing if it lights up. If it does not light up, it may be broken or disconnected which will prevent it from sending the start up signals.
A laptop's battery typically has a lifespan of just 1-3 years. The battery's ability to hold a charge naturally decreases with time. If your battery does not hold any charge, your laptop will not function unless it is plugged into an outlet. To use your laptop normally, you will need to replace your battery.
Issues with your computer's Random Access Memory (RAM), will cause several common symptoms. The computer may crash or display blue screens regularly. It also may cause the computer to fail to boot up or even have a flickering, distorted display.
The motherboard is where all the computer's major components are connected to one another. If your computer does not turn on or respond at all, there is a good chance your motherboard needs to be replaced.
Bad Hard Drive
Your computer requires your hard drive to be fully functional in order to run. If the hard drive is fried or has less than 15% of free space, it will not operate.
Dead CMOS Battery
Inside your computer is a small battery. This battery supplies power to an on-board chip that stores information such as the time, date, and the system settings for your computer. CMOS batteries last for about 10 years, but a bad CMOS battery can prevent the computer from starting up.
Laptop Turns On but Nothing Happens
It is very possible that all your hardware is working fine and your monitor is the only problem. Before you begin advanced troubleshooting and taking apart your laptop, make sure your monitor is working properly.
When your computer starts up, it will produce certain beep codes. These beep codes give the user an idea of what is not working properly.
Sometimes the problem is a simple software error with the CMOS. An easy way to check this is by resetting the CMOS, which clears the settings on the motherboard. To reset the CMOS, simply remove and then reinstall the CMOS battery.
Laptop Freezes Up or Crashes
As your RAM begins to fill up, your computer will start to slow down and possibly freeze or crash. Because the Asus X551CA has its RAM built into the motherboard, your only practical option is to delete excess data on your laptop.
Bad Hard Drive
As your hard drive begins to fill up, your speed will begin to decrease. However, it is important to note that your hard drive needs at least 15% of free space for it to work at minimal levels. Below that, your hard drive might freeze up and stop working. Beyond memory usage, hard drives can also freeze up due to physical damage, and the best thing to do for this is simply replace your hard drive.
As your computer begins heating up, certain components begin to fail. Just like any system, your laptop needs to remain cool to perform at optimal levels. It is important to have an adequate amount of cool airflow to keep from overheating. In order for this to happen, both the fan and heat sink must be functioning properly. Also check to make sure that your laptop is free of dust.
Keypad Becomes Unresponsive
If you've bumped or dropped your laptop by accident, it it possible that some of the information ribbons came undone. These ribbons relay the information from the touch pad to the motherboard.
Broken Touch Pad
The touch pad is used everyday, and there is a chance that it has stopped working as a result of erosion. The best option may be to simply replace it.
Laptop Won't Connect to The Internet
Bad Wifi Card
If your computer is not connecting to wireless internet servers, there is a good chance your WiFi card has gone bad. An easy solution is to simply replace your Wifi card.
Bad Ethernet Port
Damage to Ethernet port may prevent the Ethernet cable from properly connecting. If this is the case, the port must be replaced. Unfortunately, with the Asus X551CA, the Ethernet port is soldered to the motherboard. This means that, the only way to replace this port is by replacing the entire motherboard.
Laptop Not Configured Properly
There is a chance that your hardware is functioning properly, and that the problem lies within your network configuration.