What is the hardware?
Do these terms sound familiar? Monitors, RAM, CD, CPU, graphics cards are all hardware, or more precisely, the computer hardware. These components are a computer, working with computer software on a computer to function.
In short, the hardware is the tangible part of your computer parts you can touch, feel, and so on.
Hardware Issues
As mentioned earlier, hardware and software work together to form a fully functionaltheoretically. However, we rarely get a fully working system at all times. There are almost certainly the fault of hardware, both in electronic circuits or even the whole component. Sometimes the input source is not the fault of the hardware components of the system itself but by external factors such as environmental disasters such as fires, earthquakes and storms.
Restoration of defective hardware is not a big problem in itself. It isIn principle, the identification and replacement of the problematic component. However, hardware faults are more deadly when they affect the daily habits that affect critical personal or business data. This is particularly true for the main component of a computer system for data storage, the hard disk.
The following is a list of common hardware problems:
Defects RAM
Power Connector
Hard Disk
Overheating
LCD Defects
Motherboard
USB Box
RAMErrors
Bad RAM is somewhat difficult to diagnose because similar symptoms can be caused by software problems, hardware problems or other defective motherboard. But if you have any of these symptoms, users must check bad RAM before all the other problems.
Symptoms:
Windows does not start with a different error message every time.
Windows crashes (blue screen) or locks up often.
Windows crashes when you try to start a program.
Inexplicablerandom crashes and freezes without error.
Power Adapter
The common defect in a laptop is the DC power jack. If someone trips over the cable and adapter is still connected to the laptop, there is a high possibility that the power jack will be severely damaged.
In most laptops, DC power jack is soldered directly to the motherboard and there are only three or four small pins to holdin place, making the power supply rather weak. Each side to draw the DC power cord while the laptop used to release at least one of these pins, breaking the solder around it. Modern laptops use a lot of energy, about 70W to 120W or more. The poor electrical connection pin displaced sparks and heat will eventually burn a hole through the motherboard and even a firedanger.
The symptoms of contact between the motherboard from the power outlet and continues:
The battery is not charging properly or remain in the middle of the structure, despite the use of power adapter.
The flickering of the screen (brightness variations), while the cable is plugged in. This is caused by the transition between the DC power laptop (the screen is brighter) and battery (screen is dimmer).
The DC jack is hot after afew minutes of use, and may also smell something burning.
There are "scratching" sounds from the DC jack.
As a test for broken socket:
1. Remove the battery
2. Connect the power
3. Start the laptop
4. Gently rock the DC plug on the back of the laptop
If the laptop suddenly shuts down (losing power), find a dealer to re-weld or modify the DC power jack soonpossible if the motherboard already has started to burn around the pins driven. The manufacturer may provide the motherboard instead of the whole, but the price of a new motherboard with the prosecution of work for the installation, the laptop usually cost more than the current value of that and sometimes the price can cost more than a thousand dollars.
Replace or re-solder the DC power jack is not an easy job. It usually takes several hours, depending on the damageand model of laptop. Reaching the power jack, the handset must be completely dismantled and removed the motherboard. Then, if the card around the pin is driven badly burned, the power supply must be un-soldered and the board must be patched.
After another power connection must be installed, affixed to the body of the laptop and connected by cables to the motherboard, such as the Council would not make much patchedenough on board to support the original type of power plug was soldered directly.
Hard Disk
hard disk failures are the most common computer hardware. And laptop hard drive desktop hard drive more often because of the portability of a laptop compared to the laptop stagnant. If you blow or a fall in the laptop, even a few centimeters, while the hard drive is accessible or enabled, the damage could be made for the harddisc.
Symptoms:
The laptop starts up as usual, but when Windows starts to load it in bluescreen with "UNMOUNTABLE_BOOT_VOLUME", "hal.dll missing or corrupt" or "WINDOWSSYSTEM32CONFIGSYSTEM" (or similar) is missing or damaged. All these error messages indicate a problem file. Sometimes it can be determined by a simple scan of your hard disk for errors. But more than half of these cases show that the hard drive starts to go wrong and is probably the development ofbad sectors.
The laptop starts normally, but Windows crashes on the first "Windows XP" screen, but the blue bar keeps moving, and users are able to listen to fake, but constantly clicking. The hard disk must be replaced.
Once the laptop is started, there are loud clicking or grinding noises, and Windows will not load. The hard disk should be replaced.
Shortly after starting the laptop a message (usually on a black screen) "SMART test failed.Backup your data immediately and replace the hard drive "or something like that. Well, that says it all. SMART is a self-test that is created on the hard disk.
In almost all cases, the laptop can be booted from a live "bootable CD" and everything works normally. In rare cases, the disc drive PCB (Printed Circuit Board) may have shorted out and even burn. In this scenario, the laptop will not start unless the hard disk is removed.
A good tool to use to check the hard drivelife is correcting the ADRC's hard drive. It scans your hard drive for bad sectors and will inform you if the drive is good usability.
Overheating
Overheating occurs when the air flow enough outside the computer case and motherboard and CPU on the back of the case usually via the power supply fan and other case fans.
Once the air flow is interrupted, the heat builds up quickly in the case. This ensures that both components of close, if such protection is installed or not working properly. In the long term, it can cause irreparable damage to the components to overheat.
You should also keep your computer in a dry and shady is substance and not clean.
LCD Defects
The most common LCD or liquid crystal display is faulty inverter, cable and lighting.
Symptoms:
The laptop appears to start as usual, but the screen is black, as users move, and seems to work well. Unable to cable.
L '> Laptop seems to start as usual, but the screen is very dark, but it changes the color a bit 'and allows users to see a very feint image. Failed inverter or cable 90% / 10%.
Immediately after the start of the screen is dark pink / dark red and turns after a few seconds. backlight failed.
The screen flicker a few times, but dark, if users move or touch the sides and still flickers. Unable to cable or LCD 50% / 50%.
The screen is black or white (no picture) andexternal monitor works. Unable to cable or LCD 30% / 70%.
There are stripes on the screen (horizontal or vertical) that change as users move the screen or touching the sides. Unable to cable or LCD 10% / 90%.
Motherboard
The vast majority of failures are related to the motherboard due to "Ship regulated component failure within those circuits. The power supply circuit board had partially failed and was overloaded following parts otherwise the problem wouldcapacitors are damaged first.
A motherboard on a laptop that is out of warranty would usually means it's time for a new laptop. The price of a new motherboard is usually higher than the present value of the laptop.
Symptoms:
Connect the power adapter and try starting the laptop.
Nothing happens.
"ON" lights up, the fan runs, but nothing on the screen (black) and you can not hearHD working after 10-15 seconds.
"ON" lights up, the fan runs, but after a few seconds the light goes out.
After pressing the ON button, the screen stays black and you hear a shrill sound comfortable with the handset.
damaged or incorrect driver and the operating system
device drivers, invalid or corrupted can wreck havoc on a server, making the system unbootable in some cases. Device drivers may also conflict with some application programs andlead to problems with the computer system.
If Windows Vista has just launched, it is likely that some hardware is not supported or not fully support the new OS.
Even system updates, driver updates can also fix your "hardware" problems.
See updates and fixes
It also helps (occasionally) to call their support service to assist the driver with the hardware.
Controller will not:
A controller can not act veryin case of disk failure. However, if a drive fails, users can not access that particular disc, if a controller fails, users can not access all the records, equipment and all other components connected to that particular controller.
A controller fails because a component or components on the controller board failure. When a user tries to boot, can not activate, view, log, messages or hardware conflict.
Controller failure occurs due to aof the following reasons:
Equipment / components are not connected
Make sure the cables are connecting the device / component to the controller
If the item fits into a slot, which is not rinsed, and loosely connected.
Equipment / parts are not set
Check that the equipment / components correctly identified and set in the configuration screen on the controller
Bad connectors
Replace the bad connectors with new worksthose
Poor shares
Replace the part
Poor interface card or motherboard
It is recommended that these parts are replaced or sent for computer maintenance
Hardware failure: the big problem The big problem, as discussed above, not replacing or repairing non-functional hardware, but the lost time, breaks the daily routine (especially for businesses), and the loss of important data. If you use a system at allsometimes they have a backup system as a fail-safe, or even two. If users want to make sure that none of their critical data is lost in the event of a hardware problem with their computer, there's only one way to do it - back up your data as often as possible.
There are many ways to ensure that the data backup, and as technology advances, one of the methods of backup much easier.
Consider for a moment what a backup. Back up the files on your computer means that usersare making a copy of the data somewhere else on the computer. Everyone should always have a backup of important files, at least, because you have a hardware problem, it may still be able to open the files.
Many people do not back up their files because they do not know what to do a backup. Start with those files that can not be easily recreated. Then, for files that you make frequent changes in the case ofaccidentally change something that should not have. Backup your music collection - it can be extremely expensive to replace in the event of data loss.
In general, good practice is to backup files at least monthly and more frequently when users access the files.
Thanks To : DDOS Attack Case Previsioni Tempo Ground Resistance
