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आइएसओ र सीटीईभीटीबाट मान्यता प्राप्त एलाइन्समा नयाँ मेसिनसहित चिप लेवल तालिम - MYNEWSNEPAL.COM - MYNEWSNEPAL.COM ल्यापटप, मोवाइल र प्रिटरको ६ महिने तालिम पश्चात रोजगारीको अवसरकाठमाडौं । विगत ८ वर्षदेखि काठमाडौंको पुतलीसडकमा रहेर बेरोजगारीको समस्याले जरा गाडेको अवस्थामा युवाहरुलाई दक्ष बनाई रोजगारीको अवसर प्रदान गर्दै आएको एलाइन्स ल्यापटप एण्ड रिपेयरिङ सेन्टर अब नयाँ ढंगबाट सुचारु हुने भएको छ । आइएसओ र सीटीर्इं...

स्मार्टफोनको भाइरस हटाउने ५ स्टेप | Ratopati :: For Latest Nepal news and updates युवराज भट्टराई कम्प्युटर टेक्निसियन एन्ड्रोइड अपरेटिङ सिस्टम ९ओएस० भएको स्मार्टफोन प्रयोग गर्नेको संख्या बढ्दो छ । तर, यस्तो फोनमा भाइरसले कुनै न कुनै तरिकाले आक्रमण गर्न सक्छ । भाइरसले स्मार्टफोनको डाटा नै बिगारिदिन सक्छ । त्यसैले, यस्ता भाइरसलाई हटाउनैपर्छ । तर, कसरी रु कम्प्युटर टेक्निसियन यु...

के तपाईं पनि कम्प्युटर रिफ्रेश गर्नुहुन्छ ? यो खबर अवश्य पढ्नुहोस् | Ratopati :: For Latest Nepal news and updates बीबीसी के तपाईं पनि डेस्कटप वा ल्यापटप खोल्ने बित्तिकै रिफ्रेश गर्न सुरु गर्नुहुन्छ ? यस्तो बानी धेरैको हुन्छ जो माउसलाई राइट क्लिक र रिफ्रेश गर्न सुरु गर्छन् । थुप्रै मानिसहरु लगातार यसो गर्छन् । तर के तपाईंले कहिले सोच्नुभएको छ, रिफ्रेश गर्दा केही असर हुन्छ कि हुँदैन । १० मध्ये ९ विन्डो प्रयोगकर्त...

8Beeps is usually a LCD or cable failure. Try this first :

"If the LCD on the system does not show any display, here are some basic steps that you can perform:

Remove the battery and AC Adapter from the laptop and press the power button down for about 10-15 seconds to release flea power.

Power up the system and then press the F12 key during the boot process to get to the Boot Menu, if you are able to see the display.

It may be necessary to repeatedly press the key during the start-up process.

Use the up and down arrow keys to select on the menu and press the Enter key.

Or

Hold down the Fn (function) key

Power on the notebook

You should then see the Dell logo screen with the message 'Diagnostic boot selected' in the top corner.

You can then release the keys

While the LCD BIST test runs, the LCD is operating on its own, free of the video controller, which may be discrete (a video card) or on board (on the system board). The test allows you to distinguish an LCD panel problem from a problem with the controller. If the colors are displayed across the screen without a problem, then the issue is not with the LCD." from here. Should you have a broken LCD, I would contact Dell and talk to them about the warranty issues. It is possible that they still honor the original warranty. If not, then the cost of repair will be yours, but at this point you really have nothing to lose. Hope this helps

5 Signs Your Hard Drive Lifetime is Ending & What To Do

Every one of us owns precious files like personal documents, photos, videos, or audio files, and we typically store them on hard drives. Few people realize that most electronic storage devices, including hard drives, have a rather limited lifetime when compared to the ancient ways of storing information, such as stone, papyrus, paper, or old school records. The average lifetime of a stationary hard drive today is around 5 – 10 years, depending on the type and manufacturer, and it rapidly declines if the drive is subject to strong variations in temperature, humidity, and motion as in not being stationary.
Since a majority of people today own laptops and external hard drives, which get dragged around quite a bit, a realistic hard drive lifetime is probably around 3 – 5 years. This is an extremely short time to reliably store important data. In the best of cases, hard drives fail gradually, giving you the chance to react, get a copy of your data, and replace the storage device before facing a fatal failure. There are a host of signs that hint to a gradual failure of your hard drive. If you are unsure how much life is left on your hard drive, read this article to find out what signs may reveal an approaching failure.

1. Slowing Down Computer, Frequent Freezes, Blue Screen Of Death
These are very unspecific signs that can be caused by a million different things. However, regardless of what the issue behind these symptoms is, it is recommended that you immediately make a backup. If these problems occur after a fresh installations or in Windows Safe Mode , it is almost certain that it is due to bad hardware, and possibly a failing hard drive.

2. Corrupted Data
If you’re beginning to find files that fail to open and are corrupted even though they saved without errors or if files suddenly disappear, you should get worried. While again this could be due to a multitude of issues, it is also a typical sign for a gradual hard drive failure.
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3. Accumulation Of Bad Sectors
Bad sectors are areas of the hard drive that do not maintain data integrity. They are automatically masked by the operating system and thus hard to identify, especially if large amounts of the disk are currently in use. If you actually run into bad sectors, however, that certainly is a bad sign.
You can run a manual disk check to identify errors that Windows has not spotted, yet. In Windows 7, go to > Start > Computer and right-click on the disk or partition you wish to check. Select > Properties, in the window that opens switch to the > Tools tab and click > Check now… In the Checking Disk window place a checkmark next to > Automatically fix file system errors and > Scan for an attempt recovery of bad sectors.
Windows will also check for bad sectors, when you perform a full format or chkdsk command. See this article – The Difference Between Windows Full Format & Quick Format [Technology Explained] .

4. Strange Sounds
When you hear strange noises coming from your hard drive, it may be too late already. A repetitive sound also known as the click of death is caused by the head as it is trying to write data and recovers from errors in doing so. Grinding or screeching noises indicate that parts of the hardware, for example the bearings or spindle motor, are failing.

5. S.M.A.R.T. Data
There are tools that aim to predict hard drive failure by reading the S.M.A.R.T. (S elf-
M onitoring, A nalysis and R eporting T echnology) data that is recorded by the operating system. Unfortunately, like most other methods listed above, S.M.A.R.T. is notoriously unreliable in predicting hard drive failure and the catastrophe will often happen before the warning of S.M.A.R.T. kicks in. If you have a working hard drive, however, and would like to have a look at its S.M.A.R.T. data, check out this article – 4 Tools To Predict and Prevent Hard Drive Failure

6. I Think My Hard Drive Is Failing, What Shall I Do?
So you are worried that a hard drive failure is just around the corner? The truth is, even if you are not worried, it is! The only thing you can do is always keep backups of your data on a second hard drive. The likelihood that both drives will fail simultaneously are very rare. An exception would be natural disasters like floods or fires. For these cases, I recommend to keep a copy of your most important data in a different physical location, for example at work or with a friend, or possibly on a remote server, for example by using an online backup solution.
For more information how to back up data, read my PDF manual Stuff Happens: The Backup & Restore Guide .

Hard drive

A hard disk drive (sometimes abbreviated as Hard drive, HD , or HDD ) is a data storage device. The hard disk was first introduced on September 13,
1956 and consists of one or more
platters inside of an air-sealed casing.
Internal hard disks reside in a drive bay and connect to the motherboard using an ATA, SCSI , or SATA cable, and are powered by a connection to the PSU (power supply unit). Below is a picture of what the inside of a hard drive looks like for a desktop and laptop hard drive.
As can be seen in the above picture, the desktop hard drive consists of the following components: the head actuator,
read/write actuator arm, read/write head, spindle , and platter. On the back of a hard drive is a circuit board called the disk controller.
Tip: New users often confuse memory (RAM) with disk drive space. See our
memory definition for a comparison between memory and storage.

How is data read and stored on a hard drive?
Data sent to and from the hard drive is interpreted by the disk controller, which tells the hard drive what to do and how to move the components within the drive. When the operating system needs to read or write information, it examines the hard drive's File Allocation Table (FAT) to determine file location and available areas. Once this has been determined, the disk controller instructs the actuator to move the read/write arm and align the read/write head. Because files are often scattered throughout the platter, the head needs to move to different locations to access all information.
All information stored on a traditional hard drive, like the above example, is done magnetically. After completing the above steps, if the computer needs to read information from the hard drive, it would read the magnetic polarities on the platter. One side of the magnetic polarity is 0 and the other is 1. Reading this as binary data, the computer can understand what the data is on the platter. For the computer to write information to the platter, the read/write head aligns the magnetic polarities, writing 0's and 1's that can be read later.

Operating System

An operating system or OS is a software program that enables the computer
hardware to communicate and operate with the computer software . Without a computer operating system, a computer and software programs would be useless. The picture is an example of Microsoft
Windows XP , a popular operating system and what the box may look like if you were to visit a local retail store to purchase it.
When computers were first introduced the user interacted with them using a
command line interface, which required the user to perform a series of commands in order to interact with the computer and its hardware and software. Today, almost every computer is using a Graphical User Interface (GUI) operating system that is much easier to use and operate.
Examples of computer operating systems
Microsoft Windows 7 - PC and IBM compatible operating system. Microsoft Windows is the most common and used operating system.
Apple MacOS - Apple computer operating system. The only Apple computer operating system.
Ubuntu Linux - A popular variant of
Linux used with PC and IBM compatible computers.
Google Android - operating system used with Android compatible phones.
iOS - Operating system used with the Apple iPhone .

simply we are used mostly Of computer OS

1. Windows XP
2. Windows 7
3. Windows 8

and other not use usually
4. Mac os
5. Linux os

How a CPU Works?

Introduction
Even though every microprocessor has its own internal design, all microprocessors share a same basic concept – which we will explain in this tutorial. We will take a look inside a generic CPU architecture, so you will be able to understand more about Intel and AMD products and the differences between them.
The CPU (Central Processing Unit) – which is also called microprocessor or processor – is in charge of processing data. How it will process data will depend on the program. The program can be a spreadsheet, a word processor or a game: for the CPU it makes no difference, since it doesn’t understand what the program is actually doing. It just follows the orders (called commands or instructions) contained inside the program. These orders could be to add two numbers or to send a piece of data to the video card, for example.
When you double click on an icon to run a program, here is what happens:

1. The program, which is stored inside the hard disk drive, is transferred to the RAM memory. A program is a series of instructions to the CPU.

2. The CPU, using a circuit called memory controller, loads the program data from the RAM memory.

3. The data, now inside the CPU, is processed.

4. What happens next will depend on the program. The CPU could continue to load and executing the program or could do something with the processed data, like displaying something on the screen.
Figure 1: How stored data is transferred to the CPU.
In the past, the CPU controlled the data transfer between the hard disk drive and the RAM memory. Since the hard disk drive is slower than the RAM memory, this slowed down the system, since the CPU would be busy until all the data was transferred from the hard disk drive to the RAM memory. This method is called PIO, Processor I/O (or Programmed I/O). Nowadays data transfer between the hard disk drive and the RAM memory in made without using the CPU, thus making the system faster. This method is called bus mastering or DMA (Direct Memory Access). In order to simplify our drawing we didn’t put the north bridge chip between the hard disk drive and the RAM memory in Figure 1, but it is there. If you’d like to learn more about this subject,
we’ve already written a tutorial on that .
Processors from AMD based on sockets 754, 939 and 940 (Athlon 64, Athlon 64 X2, Athlon 64 FX, Opteron and some Sempron models) have an embedded memory controller. This means that for these processors the CPU accesses the RAM memory directly, without using the north bridge chip shown in Figure 1.
To better understand the role of the chipset in a computer, we recommend you to read our tutorial Everything You Need to Know About Chipsets .