What is the hardware?
These are familiar terms? Monitor, RAM, CD drive, CPU, graphic cards are all hardware, or more accurately, computer hardware. These components constitute a computer, in cooperation with computer software to operate a computer.
Simply put, hardware is the tangible part of your computer, parts you can touch, feel and so on.
hardware failures
As mentioned before, hardware and software work together to form a fully functional system, theoretically. However, rarely it gets a fully functional system all the time. There will almost certainly be malfunction of hardware, both within the electronic circuits or even the whole component itself. Sometimes, the source of hardware failure factor is not the same system components, but because of external factors such as environmental disasters like fire, earthquakes and lightning storm.
Recovery of failed hardware products is not a big problem in itself. It is basically identifying and replacing the problematic component. However, hardware failures are most deadly, when it affects daily routine and affecting critical business or personal data. This is especially true for the most important component of a computer system when it comes to data storage, the hard drive
The following is a list of common errors .:
- RAM Failures
- power connector
- Hard Disk
- Overheating
- LCD Failures
- mother
- USB Box
Bad RAM is somehow harder to diagnose as similar symptoms may be caused by software problems, other hardware problems or even the failure of the motherboard. However, if you experience any of these symptoms, users should check for bad RAM before groped any other troubleshooting
symptoms .:
- Windows does not start showing different error messages each time.
- Windows crashes (blue screen) or freezes frequently.
- Windows crashes as soon as you try to start a program.
- Unexplained random crashes and freezes without error messages.
The common weak spot on any laptop is the DC power jack. If someone trips over the power adapter cable while it is still connected to the laptop, there is a high possibility that the power jack will get severely damaged.
On most laptops, the DC power jack is soldered directly to the motherboard and there are only three or four small pins that hold it in place, which makes the power jack rather weak. Any side of the DC power cord traction while attached to the laptop usually remove at least one of these pins, breaking the solder around it. Modern portable computers use a lot of power, from about 70W to 0W or even more. The bad electrical connection from the dislodged pin will cause sparks and heating that will eventually burn a hole through the motherboard and can even be a fire hazard
The symptoms indicating poor contact between the DC power jack and motherboard .:
- the battery is not charging properly or stays at half charge despite having to use the power adapter.
- The screen flickers (the brightness is changing) while the power cord is connected. This is caused by the laptop switching between DC power (screen is brighter) and battery power (screen is dimmer).
- The DC plug gets hot after a few minutes of use and may even smell of burning.
- There are "scratching" sounds coming from the DC jack.
How to test for broken power jack:
1. Remove the battery2. Connect the power3 cable. Portatile4 start the computer. Gently move the DC power plug on the back of the handset
If the handset is off sharply (voltage drop), find the dealer to re-solder or change the DC power jack as soon as possible as the motherboard has already started to burn around the dislodged pins. The manufacturer might offer to replace the whole motherboard; however the price of a new motherboard together with the labor charge for installing it will usually cost more than the current value of that laptop and sometimes can the price can cost over a thousand dollars.
Replacing or re-soldering the DC power jack is not an easy job. It usually takes a few hours depending on the damage and the model of laptop. To reach the power jack, the laptop has to be completely disassembled and have the motherboard taken out. Then, if the board around the dislodged pin is badly burned, the power jack has to be un-soldered and the board has to be patched.
After that a different power jack has to be installed, connected to the case of the laptop and connected with wires to the motherboard, such as the patch card would not be strong enough to support the original type of power jack that is It was soldered directly to the board.
hard drive
hard drive failures are the most common computer hardware problems. And laptop hard disks fail more often than desktop hard disks due to the portability of a laptop compared to the rather stagnant laptop. If you blow or fall to the laptop even a few inches while the hard drive is being accessed or powered up, damage can be done to your hard drive
Symptoms :.
- The laptop starts as usual but when Windows starts to load goes to blue screen with "UNMOUNTABLE_BOOT_VOLUME", "hal.dll is missing or corrupt" or "WINDOWSSYSTEM32CONFIGSYSTEM" (or similar ) is missing or damaged. All these error messages indicate a problem with the file system. Sometimes it can be resolved only scan your hard drive for errors. However more than half of these cases indicate that the hard disk is starting to go bad and is probably developing bad sectors.
- The laptop starts as usual but Windows freezes on the initial screen of "Windows XP", although the blue bar continues to move, and users are able to hear feint but continuous clicking. Hard drives must be replaced.
- As soon as the laptop is started there are loud clicks or grinding sounds and Windows does not load. Hard drives must be replaced as well.
- Shortly after starting the laptop a message appears (usually on a black screen) "SMART test failed. Backup your data immediately and replace the hard disk" or similar. Well, that says it all. INTELIGENTE. It is a self-test that is built into the hard disk.
In almost all cases the laptop can be started from a "live" bootable CD and everything works normally. In rare cases the hard disk PCB (printed circuit board) may get short circuited and even burn. In this scenario, the laptop will not start unless the hard disk is removed.
A good tool to use to check for hard disk lifespan is ADRC checker hard disk . It scans your hard drive for bad sectors and inform you if the unit is still good usability.
Overheating
Overheating happens when inadequate airflow from outside the computer's case across the CPU and motherboard and back out of the case usually via the power supply fan and other fans.
Once the airflow is disrupted, heat builds up rapidly in the case. This causes the components to a shutdown, if such protection is built in an irregular manner or is running. In the long term, overheating can irreversible damage components.
is also advisable to keep the computer in a dry and shaded room, which is clean and little 'dust.
LCD failures
The liquid crystal display most common LCD or "Display" screen failure is the inverter, cable and backlight
symptoms:
- The laptop appears to start as usual but the screen is black, if users move it, it turns on and works properly. cable fault.
- The laptop appears to start as usual but the screen is very dark, although it changes color a bit ', and users can see a picture very fake. Failed inverter or cable 0% / 10%.
- Immediately after starting the screen has dark pink / red tint and turns dark after a few seconds. backlight failed.
- The screen flickers a few times but then turns dark, if users move or touch lightly on the sides, it flickers again. failed cable or LCD 50% / 50%.
- The screen is black or white (no picture) and external monitor works. failed cable or LCD 30% / 70%.
- There are stripes on the screen (vertical or horizontal) that change when users move the screen or tap on the sides slightly. faulty cable or LCD 10% / 0%.
Most motherboard related failures are due to regulated supplies and component failures "on-board" within those circuits . The on-board power supply circuit had partially failed and was overloading subsequent components otherwise the problem would be with the capacitors, which are defective in the first place.
A motherboard failure on a laptop that is out of warranty would usually mean that it's time for a new laptop. The price of a new motherboard is usually higher than the current value of the laptop
Symptoms: ..
Connect the power adapter and try to start the laptop
- nothing happens.
- The "ON" light comes on, the fan spins, but nothing on the black (screen) and you can not hear the HD working after 10-15 seconds.
- The "ON" light comes on, the fan spins, but after a few seconds the light goes off.
- After pressing the "ON" button the screen stays black and you can hear a high-pitched noise sound coming from the laptop.
device driver is invalid or corrupted can wreck havoc on a server, making it possible to start the system in some cases. Device drivers may also conflict with certain application programs and cause problems with your computer system.
As Windows Vista has just made its launch, chances are some hardware is not supported or not supported fully by the new operating system.
Furthermore, system updates, driver updates can also fix your "hardware" problems.
see update fixes
Also, it helps (occasionally) to call the respective support service for help on the driver that is with that particular hardware
controller error :.
A controller error can act much like a drive failure. However, when a drive fails, users can not access that particular drive; when a controller fails, users can not have access to all units, devices and any other components that is attached to that particular controller.
A controller fails because a component or components on the on the controller board fails. When users trying to boot the system, they can not switch on, view, access, or even get hardware conflict messages
controller error occurs due to one of the following reasons :.
- Devices / components not connected properly
- Make sure the cables are connected properly the device / component to the controller
- If the component fits into a slot, we see that it is emptied and not vaguely connected.
- Devices / components not configured properly
- Verify that the devices / components correct detection and configuration to the respective controller setup screen
- connectors Bad
- Replace the bad connectors with those new work
- components Bad
- Replace the component
- interface card or motherboard Bad
- It is recommended that these components are replaced or the computer to be sent in for servicing
The big problem, as mentioned earlier, is not replacing or repairing non-functional hardware, but the time lost, interruptions daily routine (especially for businesses), and the loss of critical data. If you need a running system at all times, have a backup system as a fail-safe, or even two. If users want to ensure that none of their critical data is lost in case of a hardware problem with their computer, there is only one way to do it -. of data backup as often as possible
There are many different ways to ensure that the backup data, and as technology becomes advances, back up methods become much simpler.
we look for a moment at what a back up is. Back up your computer files means that users are making a copy of the data that will be stored in a different location on your computer. Everyone should always have a back up at least the most important files, because should anyone experience a hardware problem, they might still be able to access files.
Many people do not back up their files, because they do not know what they need to back up. Start with those files that can not be easily recreated. Then, move on to files to which you make frequent changes in case you accidentally change something that you should not have. Back up your music collection -. Because this can be quite expensive to replace in the event of data loss
In general, it is good practice to back up the files at least monthly and more frequently if users access the files regularly.
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