How to fix a shorted motherboard
A computer's motherboard directs the flow of electricity through millions of different paths and switches, allowing the computer to function and perform tasks. If the delicate circuit is interrupted by a short circuit, an incorrect connection between two points on the board, the computer will stop working completely. The short circuit is difficult to identify, as it presents the same symptoms as other problems. Troubleshooting these problems, as well as compensating for board or possible short circuits, can sometimes bring a motherboard back from the dead.
Instruction
1) Check the motherboard for improper contact points, such as unsealed components or debris directly touching the motherboard circuitry. Metal from other components, debris and even the computer case itself can create a short circuit that prevents the motherboard from functioning properly.
2) Check the power supply. If the board shows no signs of life and does not attempt to power up, the problem could be the power supply rather than a short circuit. The power supply can be tested with a power supply tester or multimeter at home, if you have access to one, or at a computer repair shop. Alternatively, connect a verified working power supply to the motherboard.
3) Remove the RAM modules from the board and attempt to boot the machine. If the motherboard is trying to boot, it will produce beep error codes after a few seconds due to the lack of RAM. If beep codes sound, the motherboard is trying to boot, which indicates that the board is probably intact, but is having a problem due to a bad component.
4) Replace all remaining components and peripherals. A PCI or graphics card peripheral that is improperly inserted in its slot may prevent the motherboard from booting. Remove each component from the slot, check the slot and contacts for debris or obstructions, and reinsert the component.
5) Reinstall the RAM on the motherboard one module at a time, attempting to power up the computer after installing each module. If the computer boots correctly, insert the next module and restart. Continue testing each module until the computer refuses to boot, identifying the defective module, or until all the RAM is installed. Defective RAM can prevent a motherboard from booting.
Tips and Warnings
If the motherboard has shorted or overloaded and suffered electrical damage, nothing can be done to repair the board. If the electrical surge short-circuits or damages a peripheral or removable component, such as RAM, the damaged item can be replaced. If the damage is on the motherboard itself, the motherboard will need to be replaced.
Turn off and completely disconnect the computer from all external power sources before working inside the case. Failure to do so will result in severe electrical shock.
5 common mistakes that will damage or ruin your motherboard
If the processor is the brain of your computer, the motherboard is the heart: it is where the different parts of a computer connect and talk to each other. So if your motherboard has a problem, it's a bigger problem than just replacing a part.
Normally, motherboards are robust enough to withstand damage from everyday use. But there are a few things you can do to make sure it continues to function properly. Protecting the motherboard from damage is crucial to protecting all other components.
Avoid some of these common mistakes that damage a motherboard and save yourself headaches.
1. Checking for short circuits
This problem is most common in desktop computers, but also occurs (still rarely) in laptops. Whether you want to build your own PC or buy an assembled one from somewhere, there is a possibility of a short circuit if it has not been assembled correctly.
The motherboard conducts electricity and transmits it to other components, so it cannot come into contact with any metal, such as the case itself or a poorly mounted component. Loose CPU coolers often cause irreparable damage to motherboards. Also, check for loose cables, a common mistake in PC maintenance.
When assembling your PC, you must correctly insert the motherboard into the case. The motherboard has a few screws that are used to secure it to the case. Be sure to use each screw and make sure it is tight. A single loose screw can fry an entire motherboard, it happens!
In short, the inside of the computer must be tidy and organized. If the motherboard comes into contact with an unwanted object, it can cause a short circuit.
2. Protect yourself from voltage fluctuations.
The motherboard is where the computer's power supply unit (PSU) is connected. It is important to buy the right power supply for your needs: if your components require more power than the PSU can provide, it will cause the components or the motherboard to fail.
But the most common problem with motherboards is voltage fluctuations. Some electronics in your home draw a lot of power, such as air conditioners or refrigerators. Have you ever seen the lights flicker when these appliances are turned off? This is because they needed to draw more electricity and caused an overload.
When they are turned off, it takes a few seconds for the current to adapt. And in those few seconds, it is redirected to other electronic devices, such as lights or computers. This is the most basic explanation of a power surge. It happens more often than you think, depending on your power settings, your local power grid and even weather conditions (such as lightning).
Most power supplies and motherboards adjust their voltage to accommodate small current spikes. But if it's big, it can fry your motherboard and all the components connected to it. It's a big problem that we never usually consider properly. The only solution is to buy a surge protector for your computer.
3. Clean ventilation inlets
Heat is the enemy of electronics. Computer components need to be kept cool to function properly. But they generate a lot of heat themselves. That's why heat dissipation is crucial for computers, whether it's fans or heatsinks.
Related: How to prevent your computer from overheating and keep it cool
If your notebook regularly overheats, you should clean the vents. The heat can cause the motherboard to warp. Now, we're not talking about it warping completely. But even small bends can affect stress points, such as screws or connectors.
Remember that a loose or mismatched connection is a time bomb for your motherboard.
4. Incompatible components
Another mistake some users make is trying to install incompatible or low-quality components on a motherboard. Before assembling a PC, it is essential to check if all parts are compatible. There are numerous web sites that allow you to check for compatibility issues.
Also, be sure to buy good quality parts for your motherboard. If you're going to build an expensive computer, don't skimp on components like high-quality RAM or a good power supply.
As mentioned above, heat is the enemy of computer components. Keep this in mind when purchasing parts such as graphics cards. Some graphics cards have a higher affinity for overheating due to fan design and other factors. Avoid them if you can.
5. Improper handling
Motherboards are easy to damage during installation due to careless handling. If you mount your computer, make sure you have an antistatic wrist strap and an antistatic mat handy.
Always keep the base plate on an antistatic mat when handling it. A single static discharge can cause irreversible damage to the motherboard.
Related: The basic parts of a computer and how to upgrade them
Another important thing to keep in mind is to avoid touching the circuitry on the motherboard. Whenever you lift it up, hold it using the edges. Also, during installation, screw down the motherboard by applying equal pressure at all corners, i.e., do not fully tighten one screw before moving on to the next.
For PC troubleshooting assistance, please contact repararmac.eu
Source 1: Myclads
Source 2: Tecnobabele