Advanced Startup Options in Windows 8

Yesterday my laptop become unusable state,while trying to make a change in the registry.as a result of this,it took a start up error.So I peep into recovery method using Advanced Startup Options in Windows 8.Here I am going to give you a brief discussion of those options.

The quickest way to start Advanced Startup Options is from PC Settings -> General -> Advanced startup

Refresh your PC is available from the Troubleshoot screen and says If your PC isn't running well, you can refresh it without losing your files.Your saved files, personalization settings, and Windows Store apps all remain. Any non-Windows-Store installed programs will be removed and PC settings will be defaulted.

Reset your PC is available from the Troubleshoot screen and says If you want to remove all of your files, you can reset your PC completely.the process of removing all of the apps, programs, and data from your computer.

System Restore is available from the Advanced options screen and says Use a restore point recorded on your PC to restore Windows.For example, if you suspect some driver or registry issue is preventing Windows 8 from starting properly, but find yourself in the unfortunate situation of not being able to start Windows to then start System Restore, this option becomes very valuable.

Command Prompt is available from the Advanced options screen and says Use the Command Prompt for advanced troubleshooting.Most commands that are available from the Command Prompt in Windows are also available in the Command Prompt included here as part of Advanced Startup Options.

references:
http://pcsupport.about.com/od/termsag/tp/advanced-startup-options.htm

solutions for frequent error in installing win8-"A media driver your computer needs is missing"

Load Driver 

A media driver your computer needs is missing. This could be a DVD, USB, or Hard disk driver. If you have a CD, DVD, or USB flash drive with the driver on it, please insert it now. 

Note: If the installation media for Windows in the DVD drive or on a USB drive, you can safely remove it for this step.

This is one of the most bothersome error message that you may met with when you tried to install windows 8 for your PC with a DVD.So today I teach you how to get rid of this spiny error.here we go in point form!

• The removal of installation DVD during the setup process will show this error message.So make sure your installation DVD is inside the drive.
• A usage of low-quality DVD to create the installation DVD may be another reason.
• The speed at which the installation DVD was burned will be another fact.It is better to burn at lower speed 
• If the DVD drive cannot read the media may be another cause.You can certify this by running the DVD on a different computer to determine whether the DVD works correctly.
• The ISO file which  you used to make the DVD will be corrupted.So you can attach the ISO file to a virtual machine to check whether it is corrupted.

references:

http://support.microsoft.com/kb/2755139

The Power of MATLAB software

MATLAB which stands for matrix laboratory is a powerful software that  used in industry in most occasions.I got chance to practice this software in my computer science degree program in Image Procesing course unit.A brief introduction of this software is given below.

MATLAB® is a well known interactive software environment and programming language available from The MathWorks. More than a million engineers, scientists, and students use MATLAB for a growing variety of tasks, including:  

1. Data acquisition
2. Data analysis and visualization
3. Waveform generation
4. Application creation, including with graphical user interfaces
5. Test system developments
6. Algorithm development
7. Modeling, simulation, and prototyping

MATLAB’s interactive environment makes it possible to perform computationally intensive tasks faster than with traditional programming languages such as C, C++, and Fortran. The MATLAB Instrument Control Toolbox lets you configure and control instruments, such as oscilloscopes, function generators, and analytical instruments, directly from MATLAB®. The toolbox enables you to communicate with instruments via instrument drivers, such as IVI and VXIplug&play, and commonly used communication protocols, such as GPIB, VISA, TCP/IP, and UDP. With the Instrument Control Toolbox product, you can generate data in MATLAB to send out to an instrument, or read data into MATLAB for analysis and visualization.

MATLAB® is a registered trademark of The MathWorks, Inc.

references:

http://www.keithley.com/matlab/instruments

What are Cracks,Patches and Keygens

Most often I heard that cracking and patching.Does this sound the same meaning?Following content is for those who have doubt on it.

A crack may consist of a patch which modifies the software so you are not requested to register anymore.A crack is file that you need to copy into the program directory, replacing a file, to make the program work without a cd or whatever.

A patch can be both illegal and legal. Legal in the sense that Adobe releases a patch frequently to update photoshop with stability and fix bugs. Cracks can be fishy, since anyone can misuse the crack file to infect others, Patches on the other side, do not allow people to extract the cracked file from the Patch which makes Patches very much safer than cracks.

keygen(Key makers, or Key generators) are tiny programs which contain a huge list of serial numbers hard encoded inside among which one random serial no. is displayed every time a person clicks the “generate” button. While most of the antiviruses will detect other methods of cracking or illegally licensing a software, keygen are mostly resilient to antiviruses since their only work is to display some numbers.

references:
http://r00t3r.com/difference-between-patches-cracks-keygens-noobs-guide/
Disclaimer:This content is only for education purposes only.

How to Recover hidden files from your Pendrive after virus infection

Mostly pen drive doesn't consist any security measures. Since we use Pen drive in many PC/Laptops it very easily gets infected with viruses and malwares.Recently a shortcut virus put me into great inconvenience.When I check property of the USB Drive, Disk usage shows there are files in the pen drive but inside pen drive I could't find any!!, left with some Shortcuts.when I looking for a solution,i came up with a possible answer.here it is for you!

• Click on "Start" -->Run --> type cmd and click on OK. 
• Here I assume your flash drive letter as G.Enter this command. 

attrib -h -r -s /s /d g:\*.* 

You can copy the above command --> Right-click in the Command Prompt and paste it. 

Note : Don't forget to replace the letter g with your flash drive letter. 

• Now press "Enter". 

Now check for your files in Flash Drive. 

Difference between Sleep and Hibernate

Recently I messed up with the terms sleep and hibernate.so I googled those terms carefully.these are the things which i found to distinguish the terms.

Sleep is a power-saving state that allows a computer to quickly resume full-power operation (typically within several seconds) when you want to start working again. Putting your computer into the sleep state is like pausing a DVD player—the computer immediately stops what it’s doing and is ready to start again when you want to resume working.

Hibernation is a power-saving state designed primarily for laptops. While sleep puts your work and settings in memory and draws a small amount of power, hibernation puts your open documents and programs on your hard disk, and then turns off your computer.Of all the power-saving states in Windows, hibernation uses the least amount of power. On a laptop, use hibernation when you know that you won't use your laptop for an extended period and won't have an opportunity to charge the battery during that time.

Further more.....

I found another term that is Hybrid Sleep

The Hybrid Sleep mode is a combination of the Sleep and Hibernate modes meant for desktop computers. It puts any open documents and applications both in memory and on your hard disk, and then puts your computer into a low-power state, allowing you to quickly wake the computer and resume your work. The Hybrid Sleep mode is enabled by default in Windows on desktop computers and disabled on laptops. When enabled, it automatically puts your computer into Hybrid Sleep mode when you put it into Sleep mode.

references:

http://windows.microsoft.com/en-us/windows7/sleep-and-hibernation-frequently-asked-questions

http://www.howtogeek.com/102897/whats-the-difference-between-sleep-and-hibernate-in-windows/

What are Virtual Machines,Emulators and Clones

In these days we are learning about operating system concepts in my degree program.I'm fond of experiencing different operating systems in my laptop.while i was searching the web for additional details i found this different tools which helps to support my effort.webmasters using multiple browsers, and even just the ordinary person uses these tools who wants to test different software without the latter harming their real machine.as an example, if you use a Mac, and want to run Windows programs alongside your Mac software.

Virtual Machines ("VM") allow you to run another operating system (or even the same one) on top of the current system you're currently running. For example, it's possible to run (say) Windows XP on your Windows 7 machine in a separate window. This requires that your computer currently uses an x86 (32 or 64 bit) processor (be it Intel or AMD). The virtual machine then visualizes the hardware so that the guest operating system (the one you're running in a separate window) thinks it the only one running on the machine. The programs running in the guest are isolated from your main computer, making such a system very useful for programmers

Emulators are slightly different. emulators are software that run on top of another operating system that attempt to imitate the entire operating system from its user interface down to its API.They allow you to run an operating system that requires (say) an Intel/AMD x86 processor on a completely different CPU (processor). For example, it may allow you to run Windows XP on a PowerPC processor (something that normally won't work, since Windows XP requires an x86 processor). In other words, unlike the VM which only has to virtualize some of the hardware, emulators have to emulate everything, including the CPU. As such, emulators tend to be much slower than VMs

Emulation layers are merely API layers that pretends to a program that it is running on top of Windows. The emulation layer runs on top of another full fledged operating system.It allows you to run Windows programs in your machine even though you are not actually running Windows.

Clones are software that attempt to mimic the entire operating system from its user interface down to its underlying programming interface (or Application Programming Interface, "API"). It can run directly on hardware, such as a new machine, and operates as a complete system on its own.

Emulators are software that run on top of another operating system that attempt to imitate the entire operating system from its user interface down to its API.

references:
thefreecountry.com

How to Extend your Laptop's Batery Life

The most tantalizing problem with a laptop usage is getting it's battery life shorter(Here I focus on not to keep the battery long period after single charge).there are few good practices of having longer life with your laptop.today i'm going to reveal them.let's start.

1. Most laptops use lithium-ion (Li-ion) batteries. Like most batteries, lithium-ion batteries gradually lose their capacity to store energy as they age, whether or not you charge them. Over time, this change in storage capacity significantly affects the accuracy of the battery meter. If you frequently drain a lithium-ion battery, and then recharge it, it can quickly lose its ability to hold a charge, which affects the accuracy of the battery meter. Lithium-ion batteries last longer if you charge them often, a little at a time, to maintain a minimum charge of about 40 percent capacity.
2. The practice of completely draining the battery, and then fully charging it, is advice that applied to nickel cadmium (NiCd) batteries and, to a lesser extent, nickel metal hydride (NiMH) batteries. 
3. Don’t leave your laptop fully charged for an extended period of time without using it once. This can be damaging, and cut its life shorter. 
4. Blocking off the vents will cause your laptop to overheat, killing the battery. When it isn't in use, don’t just leave it on the bed, move it to the table or another flat surface.

references:

http://digitalwrap.com/best-way-extend-laptops-battery-life/

http://www.microsoft.com/