- The main disadvantage of PC
Crash is loss of your Important files or data and This is very common
problem in these days. So Today in this Trick I am going to share some
reasons why your PC crashes and their solutions. There are many signs
when your PC creash But The comman fetal error that comes when your pc
- Fatal error: When the system has
become unstable or is busy then 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 Microsoft Windows will be familiar with this.
- What can you do? More importantly, how can you prevent it happening?
- 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:
- Goto Start >> Settings >> Control Panel >> System-Device Manager.
- Often if a device has a problem a yellow sign '!' 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.
- 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
- 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.
- 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.
- Microsoft 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.).
- 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
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
An excellent antivirus programme is McAfee VirusScan by Network
Associates (www.nai.com). Another is Norton AntiVirus 2000, made by Symantec (www.symantec.com).
- 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
- 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.
- 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.
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.
- 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.
- 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.
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.