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10 reasons why PCs crash You must Know

10 reasons why PCs crash You must Know:-

Most people have problems with their PCs and they get tired of it by shutting down it again and again, closing all applications, hanging etc etc, so today i will share some most common problems which are encountered by daily users which most of us don’t know…….. so read the article and solve these problems and speed up your PCs and save your valuable time

Fatal error: the system has become unstable or is busy,” it says. “Enter to
return to Windows or press Control-Alt-Delete to restart your computer. If
you do this you will lose any unsaved information in all open applications.”

You have just been struck by the Blue Screen of Death. Anyone who uses Mcft
Windows will be familiar with this. What can you do? More importantly, how
can you prevent it happening?

1) Hardware conflict:

The number one reason why Windows crashes is hardware conflict. Each
hardware device communicates to other devices through an interrupt request
channel (IRQ). These are supposed to be unique for each device.

For example, a printer usually connects internally on IRQ 7. The keyboard
usually uses IRQ 1 and the floppy disk drive IRQ 6. Each device will try to
hog a single IRQ for itself.

If there are a lot of devices, or if they are not installed properly, two of
them may end up sharing the same IRQ number. When the user tries to use both
devices at the same time, a crash can happen. The way to check if your
computer has a hardware conflict is through the following route:

* Start-Settings-Control Panel-System-Device Manager.

Often if a device has a problem a yellow ‘!’ appears next to its description
in the Device Manager. Highlight Computer (in the Device Manager) and press
Properties to see the IRQ numbers used by your computer. If the IRQ number
appears twice, two devices may be using it.

Sometimes a device might share an IRQ with something described as ‘IRQ
holder for PCI steering’. This can be ignored. The best way to fix this
problem is to remove the problem device and reinstall it.

Sometimes you may have to find more recent drivers on the internet to make
the device function properly. A good resource is www.driverguide.com. If the
device is a soundcard, or a modem, it can often be fixed by moving it to a
different slot on the motherboard (be careful about opening your computer,
as you may void the warranty).

When working inside a computer you should switch it off, unplug the mains
lead and touch an unpainted metal surface to discharge any static
electricity.

To be fair to Mcft, the problem with IRQ numbers is not of its making. It is
a legacy problem going back to the first PC designs using the IBM 8086 chip.
Initially there were only eight IRQs. Today there are 16 IRQs in a PC. It is
easy to run out of them. There are plans to increase the number of IRQs in
future designs.

2) Bad Ram:

Ram (random-access memory) problems might bring on the blue screen of death
with a message saying Fatal Exception Error. A fatal error indicates a
serious hardware problem. Sometimes it may mean a part is damaged and will
need replacing.

But a fatal error caused by Ram might be caused by a mismatch of chips. For
example, mixing 70-nanosecond (70ns) Ram with 60ns Ram will usually force
the computer to run all the Ram at the slower speed. This will often crash
the machine if the Ram is overworked.

One way around this problem is to enter the BIOS settings and increase the
wait state of the Ram. This can make it more stable. Another way to
troubleshoot a suspected Ram problem is to rearrange the Ram chips on the
motherboard, or take some of them out. Then try to repeat the circumstances
that caused the crash. When handling Ram try not to touch the gold
connections, as they can be easily damaged.

Parity error messages also refer to Ram. Modern Ram chips are either parity
(ECC) or non parity (non-ECC). It is best not to mix the two types, as this
can be a cause of trouble.

EMM386 error messages refer to memory problems but may not be connected to
bad Ram. This may be due to free memory problems often linked to old Dos-
based programmes.

3) BIOS settings:

Every motherboard is supplied with a range of chipset settings that are
decided in the factory. A common way to access these settings is to press
the F2 or delete button during the first few seconds of a boot-up.

Once inside the BIOS, great care should be taken. It is a good idea to write
down on a piece of paper all the settings that appear on the screen. That
way, if you change something and the computer becomes more unstable, you
will know what settings to revert to.

A common BIOS error concerns the CAS latency. This refers to the Ram. Older
EDO (extended data out) Ram has a CAS latency of 3. Newer SDRam has a CAS
latency of 2. Setting the wrong figure can cause the Ram to lock up and
freeze the computer’s display.

Mcft Windows is better at allocating IRQ numbers than any BIOS. If possible
set the IRQ numbers to Auto in the BIOS. This will allow Windows to allocate
the IRQ numbers (make sure the BIOS setting for Plug and Play OS is switched
to ‘yes’ to allow Windows to do this.).

4) Hard disk drives:

After a few weeks, the information on a hard disk drive starts to become
piecemeal or fragmented. It is a good idea to defragment the hard disk every
week or so, to prevent the disk from causing a screen freeze. Go to

* Start-Programs-Accessories-System Tools-Disk Defragmenter

This will start the procedure. You will be unable to write data to the hard
drive (to save it) while the disk is defragmenting, so it is a good idea to
schedule the procedure for a period of inactivity using the Task Scheduler.

The Task Scheduler should be one of the small icons on the bottom right of
the Windows opening page (the desktop).

Some lockups and screen freezes caused by hard disk problems can be solved
by reducing the read-ahead optimisation. This can be adjusted by going to

* Start-Settings-Control Panel-System Icon-Performance-File System-Hard
Disk.

Hard disks will slow down and crash if they are too full. Do some
housekeeping on your hard drive every few months and free some space on it.
Open the Windows folder on the C drive and find the Temporary Internet Files
folder. Deleting the contents (not the folder) can free a lot of space.

Empty the Recycle Bin every week to free more space. Hard disk drives should
be scanned every week for errors or bad sectors. Go to

* Start-Programs-Accessories-System Tools-ScanDisk

Otherwise assign the Task Scheduler to perform this operation at night when
the computer is not in use.

5) Fatal OE exceptions and VXD errors:

Fatal OE exception errors and VXD errors are often caused by video card
problems.

These can often be resolved easily by reducing the resolution of the video
display. Go to

* Start-Settings-Control Panel-Display-Settings

Here you should slide the screen area bar to the left. Take a look at the
colour settings on the left of that window. For most desktops, high colour
16-bit depth is adequate.

If the screen freezes or you experience system lockups it might be due to
the video card. Make sure it does not have a hardware conflict. Go to

* Start-Settings-Control Panel-System-Device Manager

Here, select the + beside Display Adapter. A line of text describing your
video card should appear. Select it (make it blue) and press properties.
Then select Resources and select each line in the window. Look for a message
that says No Conflicts.

If you have video card hardware conflict, you will see it here. Be careful
at this point and make a note of everything you do in case you make things
worse.

The way to resolve a hardware conflict is to uncheck the Use Automatic
Settings box and hit the Change Settings button. You are searching for a
setting that will display a No Conflicts message.

Another useful way to resolve video problems is to go to

* Start-Settings-Control Panel-System-Performance-Graphics

Here you should move the Hardware Acceleration slider to the left. As ever,
the most common cause of problems relating to graphics cards is old or
faulty drivers (a driver is a small piece of software used by a computer to
communicate with a device).

Look up your video card’s manufacturer on the internet and search for the
most recent drivers for it.

6) Viruses:

Often the first sign of a virus infection is instability. Some viruses erase
the boot sector of a hard drive, making it impossible to start. This is why
it is a good idea to create a Windows start-up disk. Go to

* Start-Settings-Control Panel-Add/Remove Programs

Here, look for the Start Up Disk tab. Virus protection requires constant
vigilance.

A virus scanner requires a list of virus signatures in order to be able to
identify viruses. These signatures are stored in a DAT file. DAT files
should be updated weekly from the website of your antivirus software
manufacturer.

An excellent antivirus programme is McAfee VirusScan by Network Associates ( www.nai.com ). Another is Norton AntiVirus 2000, made by Symantec ( www.symantec.com).

7) Printers:

The action of sending a document to print creates a bigger file, often
called a postscript file.

Printers have only a small amount of memory, called a buffer. This can be
easily overloaded. Printing a document also uses a considerable amount of
CPU power. This will also slow down the computer’s performance.

If the printer is trying to print unusual characters, these might not be
recognised, and can crash the computer. Sometimes printers will not recover
from a crash because of confusion in the buffer. A good way to clear the
buffer is to unplug the printer for ten seconds. Booting up from a powerless
state, also called a cold boot, will restore the printer’s default settings
and you may be able to carry on.

8) Software:

A common cause of computer crash is faulty or badly-installed software.
Often the problem can be cured by uninstalling the software and then
reinstalling it. Use Norton Uninstall or Uninstall Shield to remove an
application from your system properly. This will also remove references to
the programme in the System Registry and leaves the way clear for a
completely fresh copy.

The System Registry can be corrupted by old references to obsolete software
that you thought was uninstalled. Use Reg Cleaner by Jouni Vuorio to clean
up the System Registry and remove obsolete entries. It works on Windows 95,
Windows 98, Windows 98 SE (Second Edition), Windows Millennium Edition (ME),
NT4 and Windows 2000.

Read the instructions and use it carefully so you don’t do permanent damage
to the Registry. If the Registry is damaged you will have to reinstall your
operating system. Reg Cleaner can be obtained from www.jv16.org

Often a Windows problem can be resolved by entering Safe Mode. This can be
done during start-up. When you see the message “Starting Windows” press F4.
This should take you into Safe Mode.

Safe Mode loads a minimum of drivers. It allows you to find and fix problems
that prevent Windows from loading properly.

Sometimes installing Windows is difficult because of unsuitable BIOS
settings. If you keep getting SUWIN error messages (Windows setup) during
the Windows installation, then try entering the BIOS and disabling the CPU
internal cache. Try to disable the Level 2 (L2) cache if that doesn’t work.

Remember to restore all the BIOS settings back to their former settings
following installation.

9) Overheating:

Central processing units (CPUs) are usually equipped with fans to keep them
cool. If the fan fails or if the CPU gets old it may start to overheat and
generate a particular kind of error called a kernel error. This is a common
problem in chips that have been overclocked to operate at higher speeds than
they are supposed to.

One remedy is to get a bigger better fan and install it on top of the CPU.
Specialist cooling fans/heatsinks are available from www.computernerd.com or
www.coolit.com

CPU problems can often be fixed by disabling the CPU internal cache in the
BIOS. This will make the machine run more slowly, but it should also be more
stable.

10) Power supply problems:

With all the new construction going on around the country the steady supply
of electricity has become disrupted. A power surge or spike can crash a
computer as easily as a power cut.

If this has become a nuisance for you then consider buying a uninterrupted
power supply (UPS). This will give you a clean power supply when there is
electricity, and it will give you a few minutes to perform a controlled
shutdown in case of a power cut.

It is a good investment if your data are critical, because a power cut will
cause any unsaved data to be lost.

About Shah Zeb Raza

Name : Shah Zeb Raza . He is Admin and Owner of WebsTeach. he is a developer and designer of website's , Hosting , Software , Applications, Professional Editor Of pictures, SEO Expert and much more. Visit Blog : www.shahzebraza.com

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