Jumat, 27 Mei 2011

Upgrading the Sound on your Home Computer

Computers these days are becoming more than just an avenue to surf the web and do word processing. They are becoming multimedia stations that allow us to watch movies and listen to the latest music. Especially with new solutions such as renting DVD's online and pay per download music downloading programs. This is why having good sound on your computer is

important for the best possible multimedia experience.

There are two ways you can increase the quality of sound coming from your computer. I will discuss both.

The first would be to upgrade, or get a new, sound card for your computer. The quality of the sound signal being sent from your computer is determined by the sound card. Also the amount of channels that are being sent, and the number of connectivity options you have. This is why having a good quality sound card is important. There are several cards on the market that can deliver a great listening experience.

The second way to enhance your sound quality would be to get a quality set of speakers. There are an infinite number of options you have in this regards. You can get a standard 2 speaker system, a 2.1 speaker system (2 speakers and a subwoofer), a 4.1 system and the ultimated 5.1 system. The most enhancing system would be the 5.1 system.

The 5.1 system consists of 5 speakers and a subwoofer. The subwoofer will deliver the bass and the low frequency sounds. The other speakers would be positioned strategically around the room to give the best array of sounds.

Computers today are not the simple machines they were years ago. They have the capabilities to be a lot more. With this in mind utilizing these capabilities will be very cost effective. Now you do not need to buy a stereo system and a television. A computer can fulfill both these duties.

Device Drivers Important to Know

Not many people know about device drivers until they need to find one, be it for a printer or most commonly a modem driver. Finding one can be very difficult to say the least if you are using HSP based modem drivers.

What is a Device Driver?

Every device, be it be a printer, modem, or keyboard, must have a driver program. Many device drivers, such as the keyboard driver, come with the operating system. For other devices, you may need to load a new driver when you connect the device to your computer. Note that in the older DOS systems, drivers are files with a.SYS extension. now in Windows environments, drivers often have a.DRV extension.

What do they do?

A device driver is nothing more than a glorified translator which fits between the device and programs that use the device. Each device be it a modem or printer has its own set of commands that only its driver knows. That bieng said, however most programs access devices by using generic commands. The device driver, therefore, accepts generic commands from a program and then translates them into specialized commands for the device.

Finding them:

Finding a driver can be very difficult as most manufactures manufacture a device and after 2 or 3 years change and make a different version. Finding a driver for your device becomes a task as the manufactures remove the drivers from their website and refuse to support them. They hope that you will upgrade to their new line of products, but there is no need if you know where to find your drivers. Try the following website which not only has more than 2,000 drivers but finds what you are looking for, free.

Remember, don't upgrade unless you want to. There is no need to buy new, when the old printer or modem worked just fine!

PasswordsPro - Welcome to mysterious world of hashes!

Many know that hashes are encoded passwords. Using hashes greatly increases safety of passwords storage, for example, in the forums, databases, etc. Let's assume, forum administrator has password "admin12345" which is certainly stored in the forum database. What is to be done to authenticate user on the forum? Input password shall be compared with "admin12345". If they match, administrator may enter the forum. It seems working great, but what if someone unautorized gets access to database and sees open password and can easily log in as administrator. Here hashes come to rescue. For instance, MD5-hash for "admin12345" password will look like "7488e331b8b64e5794da3fa4eb10ad5d" and it's exactly what we store in our database, not a password itself. During user authentication input password is converted to hash to compare with the hash stored in the database - if these two match that means input password is correct and logging on is successful.

But what if we need to perform reverse action - to try to restore password from hash? It's impossible to do that directly, as any hashing algorithm is password's checksum calculation. This process involves irreversible mathematical operations like logical operation AND, etc. For example, even knowing Y and Z we can never find exact X from "X AND Y = Z" equation (all we can do is calculation of range of possible X values satisfying the equation).

So if we need to find password for certain hash there's the only way to generate hashes for different passwords and then compare hashes we got with source one. If they match, it means exactly the source password is found as possibility of collision (i.e. another password which has hash matching our source hash) is very low - for example, it is (1 / 2128) in case of MD5-hashing.

Here PasswordsPro comes in handy - it is a professional tool for passwords check and recovery of passwords for hashes. It's main purpose is to recover your forgotten password when you have only one hash, or check passwords for crack-resistance.

This unique program supports about 40 types of hashes, and any new type can easily be added through writing your own DLL-hashing module.

Built-in types of hashes:

Supported types of hashes: MySQL, MySQL5, DES(Unix), MD4, MD4(HMAC), MD5, MD5(HMAC), MD5(Unix), MD5(APR), SHA-1, SHA-1(HMAC), SHA-256, SHA-384, SHA-512, Domain Cached Credentials, Haval-128, Haval-160, Haval-192, Haval-224, Haval-256 and others. The program also supports many complex hashes like md5($pass.$salt), md5($salt.$pass), md5(md5($pass)), etc. Third-party developers had already written modules for PasswordsPro for such types of hashes as MD2, Oracle DES, MS SQL and many others, including hashes no one else program in the world works but PasswordsPro!
Program uses the following methods to recover passwords:

- Preliminary attack;
- Brute-force attack (including distributed attack);
- Mask attack;
- Simple dictionary attack;
- Combined dictionary attack;
- Hybrid dictionary attack;
- Pre-calculated Rainbow-table attack.

PasswordsPro also has the following features:

- Recovery of the passwords up to 127-symbol length;
- Recovery of the passwords for incomplete hashes of any type;
- Editing of users' hashes;
- Search of users' list for required data;
- Quick addition of hash through dialog box;
- Quick check of current password for all hashes in the list;
- Unlimited number of dictionaries used for dictionary attack;
- Unlimited number of tables used for Rainbow-table attack.

Important feature of PasswordsPro it is friendly interface - all hash manipulations are made with literally couple clicks, what makes passwords check very convenient, pictorial and effective.

Another significant advantage of the program is work with Rainbow-tables for any hashing algorithms. These tables can be generated with RTGEN utility of version 1.2. or later. I.e. you can generate tables for SHA-512 algorithm, and PasswordsPro will immediately start working with them.

If you still couldn't find password for your hash, you can always get help at PasswordsPro forum.

Program has Shareware status and is distributed as Demo-version which has the only limitation - number of hashes to import for check is 1, while licensed version doesn't limit this number.

Kamis, 05 Mei 2011

Useful Tips To Run Your Dell Computer Smoothly

Whether you are owner of a Dell desktop or a laptop, you should know some important things in order to avoid unwanted situations and run your PC smoothly. In this article you will find some useful tips on this. You may talk to an online computer repair company for Dell support.
Many a times, computer gets infected by viruses and other malware and need to be reformatted. So, we will start our discussion with how to reformate a Dell PC. Before performing this task, don't forget to backup all your data. Then insert the recovery disk that was provided with your Dell computer into your CD drive and reboot the computer. If you are using Windows XP operating system, hold down Ctrl+F11 while the PC is booting up. Log in as the administrator and select "Dell Factory Image Restore" from the menu. You will be asked whether you would like to reformat the computer, select "Yes." After completing the reformatting process, reinstall all drivers as well as important software.
To get the best performance form your Dell computer you should defrag it on a regular basis. The process does not consume a lot of time but keeps your PC run in peak condition. In order to perform this task you need to right-click on the hard disk that you want to defrag and click on "Properties". Click the "Tools" tab and click "Defragment Now" button. You need to wait for the process to complete. Based on the size of the hard drive you need to wait for some time. You may view the defrag report by clicking the "View Report".
Sometimes, you may need to get to BIOS on your Dell computer for changing some settings. Whether you have Latitude, Dimension, Inspiron, Optiplex or Precision models then you need to press the "F2" key when the computer displays the initial screen. On the other hand, if you are using Optiplex and Dimension models, then press the "Del" key. For older Dell computers you have to see the initial display screen to get into the BIOS. You can either press "Ctrl + Alt + Enter" keys, or the "Del" key when the BIOS provider information is displayed.
You should install an antivirus, antispyware software to block viruses and other malware that are lurking around. In addition, keep the Windows firewall option active and don't forget to install the updates and patches of the operating system and other software.
If you follow these things, you can avoid most of the unwanted system related issues.

Panel PC Makes a Huge Wave

Computers are evolving from one day to the next with so many different models, updates and all kinds of additions coming up. Panel PC's are the latest in the market combining a CPU board, touch screen features all in a compact and well integrated model that is simply hard to resist. There are of course the latest connectivity options and models available for the common consumer and for industrial purposes. These are in addition sleeker and slimmer and the latest fad in every domain. If you want a good panel PC that has a powerful adaptable CPU with the latest disc formats supported, you may want to look at some of the newer models available in the market.
There are many brands offering a myriad of features. From Blu-ray movies compatibility and optical drives to hybrid digital and analog TV tuners, this does offer consumers a lot of options. You may want to decide if you want the fan less Panel PC and also what features are important to you. Do you plan to double it up as a TV? Is it for official work or gaming? These questions when answered will make it clearer as to the specifications you want to look out for in the products.
The lack of ease in moving it with a weight of more than 9 Kg in some models may be problematic as some models don't have a handle to carry it or shift it. Also the graphics and viewing angle may be another consideration if it is to be installed in a lounge with multiple viewers. These flat panel PC's are also more eco-friendly with energy saving properties. Having the overhead bills reduced is a great idea for many offices all over the globe. Bigger firms often end up shelling out huge amounts in the bills following computer usage by employees all day.
These Panel PC models come with a number of features that make them multi functional. With a resistive infrared touch screen, highly expandable and ultra slim chassis to choose from, they are the modern day consumer's delight. High reliability, performance and stability are an added bonus. Being fan less, they are also quite low on noise and virtually silent. There are also multiple options to choose from in terms of mounting them. They can be mounted on a panel, on the wall, with a stand or on a swing arm. There are many customized installations also available.
The Panel PCs are designed taking into account a number of factors including needs across various sectors such as private, government, public and military sectors. The fan less cooling and anti-vibration patented design is also an exciting feature. Some of the models come with more features like compact Dual Gigabit Ethernet support, isolation protection for the ports and attractive designs. The touch screen feature makes it great to use in kiosks and other public areas in offices and other locations where the use of a mouse or keyboard may be rather cumbersome.

Senin, 02 Mei 2011

[Review] Fujitsu Lifebook SH530

Facilities in the Upper Class
Although classified as lower class, this notebook offers top class facilities.
Though relatively well-known brands, Fujitsu is virtually no incentive to bring their notebook products in Indonesia because it is more focused on the European market.
But starting in 2011, they began working on the market poised homeland more serious. This is considering the potential of the mobile computer market here is big enough though it has been crammed with many players. Starting this year, Fujitsu direct even prepare some of their notebooks. One of them with the appearance of most economic models, the LifeBook SH530.
Although classified as entry-level products, Fujitsu is preparing a series SH530 with "dressed" in such a way. This makes it seem as entry-level product. Physical design only uses premium cover (available in 2 colors, namely black and red) that look quite luxurious. It still added the presence of a series of input-output ports are fairly complete.
It seems that Japanese vendors are indeed deliver products that exceed the expectations of the wearer of an economic product. But this economic assumption became faint when I discovered that touching the selling price SH530 Rp8 million figure. What are the advantages?
 Basically, the Lifebook SH530 facilities are not much different from the competitors in her class, which sold even more affordable price. But specifically on the I / O, which makes it appear there are additional complete, such as HDMI, eSATA combo port / USB (which can be used to eSATA cable or flash), until the Express Card slot is now just starting rare. Another advantage lies in the structure of the keyboard that can withstand spills of water (water spill-resistant) so it does not go into the mainboard. However, this does not mean the keyboard is water resistant.
Because of its SH530 battery capacity is only 4400 mAh (6 cell) so that the less powerful are used to linger, the notebook weighs 2 kg is included ECO mode. This mode can be activated via a combination of key presses Fn + F11. When both buttons are pressed, the system will go into energy saving mode. When this mode is active, the batteries will be capable of supplying electricity to about 4 hours. However, it should be noted that the activation of this mode will make the performance of the notebook becomes less "ferocious". However, users will still be able to the Internet or simply typing office tasks.
Given the specification (which uses Intel Core 2.4 GHz I3-370M DDR3 memory plus 2 GB and 500 GB hard drive), the performance Lifebook SH530 spelled "is" to conduct daily computing.
 Fortunately, the graphics are supported by chip-performing Radeon HD5400 bad for gaming as well as deliver high-definition movies (see comparison table). (Deny Prasetyo)
With all the accessories, Lifebook SH530 does offer slightly better value in entry-level class. The price is high raises major question: does this notebook is an entry-level products are priced too high or is a product that is not "sekacangan" a product developed by other competitors? You alone can judge.

Testing Results
Specifications between Glee SW9 Prolink property with SH530 Lifebook very similar and only differ in the graphics chip. Prolink using onboard graphics chip Intel 4500HD. As a result, the performance Lifebook SH530 (based Radeon HD5400) rate is more than Glee SW9. Unfortunately, although the batteries are both 6-cell, the Radeon graphics chip is more power hungry to make use of Lifebook SH530 becomes shorter (except if the ECO mode is activated).
Prolink Glee SW9
Fujitsu Lifebook SH530
Sysmark 2007 v1.06
Cinebench R11.5
PCMark Vantage
3DMark Vantage
Encoding video
10 minutes 42 seconds
10 minutes 41 second
Encoding audio
1 minute 46 seconds
1 minute  46 second
Battery Life
Play  HD Video
1 hour 49 minutes
1 hour 25 minutes
Battery Eater
4 hours 23 minutes
3 hours 3 minutes

Intel Core i3-370M (2,4 GHz, 4 MB L3 cache)
2 GB, DDR3 PC3-10666
Intel HM55 (Arrandale)
Graphics Cards
Mobility Radeon HD5400 512 MB
Optical drive
WiFi b/g/n, LAN, card reader (4-in-1), Bluetooth 3.0, USB 2.0 (1), USB 3 (1), VGA-out, HDMI, Webcam.
13,3”resolution 1366x768 pixel
Sound card
Realtek ALC26
Windows 7 Home (64-bit)
4400 mAh
32,5x23,4x3,2 cm
2 kg
1 tahun

Price range*

Clearly Indicators

LED lamp life status when the notebook is clear in both dim and bright atmosphere once. It simply lets the user know the condition of vital in a fast notebook.

Water Spill Resistant

Keyboard design made specifically to prevent water or dirt that spilled on it did not go into a vital part of the notebook. We recommend that you immediately clean up spills if it occurs.

Express Card

If most notebooks start removing Express Card (EC). However, still remained loyal Lifebook SH530 paste this EC slot to accommodate devices that support it.


hi, see you again in this article I want to share with categories Trick, I try to share the knowledge that in fact not new, but it never hurts to learn together. Yes, if there are readers who have a more efficient step-related topics this time. please refer to the complete exposure of both below.
All computer users generally have been doing the installation, either operating systems or applications. When dealing with computers that are still new, of course the user must first install the operating system. Source operating system is usually in the form of a CD or DVD disc. The problem now is, what if the operating system installation will be done on a computer that does not have ODD [Optical Disc Drive]? ODD buy or borrow tools from another computer clearly is not an efficient way.
Departure from these issues, including cross in my mind to make another installer media that media practically available in all types of computers, is a USB [Universal Serial Bus]. Discuss this time I lift the theme making the installer for the operating system Microsoft Windows 7 because it is already widely used today.
Here are some components that must be prepared to make the installer Windows 7 into a flash disk.

* A flash disk with a capacity to use at least 4GB.
* Source Microsoft Windows 7 [be from media DVD or ISO which has been linked to the system].
* A USB port on your computer or laptop.
Here are some steps to make it

* Format UFD
Start by formatting the flash disk will function as an installer. This step is also to ensure that the flash disk is in good condition. The format that you can do from the Windows Explorer as usual and wait until the end.

* Command Prompt As Administrator
The process requires the authority of an administrator user, then enter the command prompt window as administrator. You simply right-clicking the command prompt shortcut is available in the Start menu, then select option [Run as Administrator].
* Diskpart

We will use internal Windows applications, namely diskpart. Consider the steps detailed below.

1. Execution command to diskpart Login console.

2. Disk list of command execution to see a list of available storage media in the system.

3. Select flash disk that will be used as an installer with the command disk select x [where x is a number that represents your flash disk].

4. Clean the disk with a fill flash net command.

5. Create a primary partition with the command to create a primary partition.

6. Select the partition that was created with the command select 1 partition.

7. Activate the selected partition to active command.

8. Change the NTFS file system type with command format fs = ntfs and wait until the end.

9. Connect flash disk into the system by giving commands. Flash disk will reappear in the command post system.

10. Exit Diskpart console with the command exit.
Microsoft Windows 7 Sources

Flash is able to accommodate source operating system, please prepare the source of Microsoft's Windows 7 via an optical device or ISO files associated with the system. Next follow the steps below to install the finalization of manufacture.

1. Still from the command prompt window, air factoring into the source directory boot Microsoft Windows 7.

2. Create a boot manager on the flash disk from the source with the command bootsect.exe / nt60 x: [where x is the letter representing the drive flash disk].

3. Back to drive the main source of Microsoft's Windows 7 with the command cd ..

4. Copy the entire contents of the source of Microsoft's Windows 7 to flash disk with the command xcopy / aeh * x [where x is the letter representing the drive flash disk].

5. Finish with a copy, was out of order execution to close windowit command prompt to close the command prompt window.