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In many cases the cause is a corrupted startup file which prevent the computer from going through the bootup from start to finish.In this case, an easy way to start your PC is to have an emergency boot disk handy.

A Boot Disk contain copies of critical files needed for startup that you should have made earlier.To use the floppy disk, all you need do is to place it in the floppy drive and reboot the computer.

As the computer start the boot process, Windows will use the good files to get itself going.The Windows XP boot disk will enable you to resolve a corrupt Ntbootdd.sys driver, missing or corrupt Ntdr or Ntdetect.com files.

These files are used by Windows XP and are crucial to its startup and configuration.The boot disk have also repair a damaged MBR or Master Boot Record.

The MBR is a small program executed when the PC boots and resides on the first sector of the hard driveIt looks up the partition on the hard drive.You can create a MBR with the FDISK /MBR coomand

A damaged boot sector can also be corrected with the boot disk.Your Windows XP boot disk will be a life saver when you have pc bootup failure and you need that file for your next interview.

A sector is the smallest unit that can be accessed on a disk.When a disk is low level formatted, it will be divided tracks and sectors

When making a boot disk make a mental note of the files being copied.This will give you added knowledge when you will need to help in making their boot disk.To make a boot disk, perform the following.

Place a blank formatted floppy disk in your floppy drive and go to My Computer in Windows XP.Click the hard drive icon and on the toolbar, click Tools, Folder Options, and then click the View Tab.

And scroll down and check "Show hidden files and folders" and just below uncheck "Hide protected operating system files (recommended). Now we're getting a little slower.

Take note of this process and as you become more familiar with this task, you'll be able to make a boot disk for others in no time and help them save on down time.

After unchecking "Hide protected operating system files, click OK.Some grayed out files will now be visible in the drive window.These files are protected system files.

Now you're ready to select the boot, the NTDETECT, and the ntldr files.Now right-click, click Send To, and select Floppy ( A: ).When you have copied all files to the floppy, you now have a Windows XP boot disk.

You should make two or more boot disks and place them in a safe place away from any type of magnetic or static charges.Before putting them away don't forget to label your life saving floppy disks.

Should you be unfortunate enough to have to put one of your boot floppies to use, remember to replace the startup files on the hard drive with the ones on the floppy.

If you overlook this critical step, you'll have the same boot up problem every time.Take your time as you copy the files and be sure not to reverse the copy procedure.

This is why its important to make two or more boot disks. This way should you have an accident with one disk, so what, you paid attention here and made several copies.

You've done it.You're now armed with a repair tool should your XP computer fail to boot.All Windows 98, 2000, and Me users also have the resources to create a book disk.

Two Census Bureau workers began to look for a means of accurately calculating information. They conceived the idea of a punch card which would be inserted into the computer (computador), read, and stored. The greatest advantage of these still slow moving machines was the ability to store large amounts of information with ease and accuracy.

The early 1940`s and the imminent World War, brought the military into the computer era (computador). New weapons requiring computer technology for effectiveness, were needed, designed and produced. These were large floor model machines and utilized the floor space of an average one family home (about 2,000 square feet). One independent computer (computador) was not adequate and a means was found to link computers which produced a more accurate and clear channel of information. These devices were not only cumbersome but they required rewiring and rechanneling for each program. Greater inventions were in progress. These new computers (computador) would be equipped with memory capacity and worker faster than any in existence at the time.

In 1947, the first modern programmable computers (computador) were designed. They contained RAM (Random Access Memory) and made it possible to access information in seconds. This technology continued to be tested and improved into the 1950`s when magnetic core memory and a transistor circuit element were discovered. These increased the memory capacity and functionality of the computers (computador). On the down side the cost to operate these machines was astronomical. By nearly sheer determination alone, these devices evolved into amazing machines able to work with a number of programs simultaneously while giving the impression that only one program was in use.

As recently as the 1960`s computers (computador) were more available and the price had become nearly reasonable for businesses. Their use however, was confined mostly to mathematically based operations such as billing, accounting, and payroll. One of the major purchasers of these devices was hospitals which stored date from patients, inventory, billing, treatments, and the like.

By the 1980`s smaller individual computers (computador) were being produced. Technology continued to astound the general public as the microchip came into existence permitting personal computers to be sold with accompanying program disks for downloading. A glance around most medium to large companies would reveal many desk top computers in use.

It would be impossible to track the history of computers (computador) without acknowledging Apple Computer and IBM for their leading edge and evolving technology. Radio Shack coupled with Apple Computer (computador) produced video games for the computer (a move from the arcade).

The ability for businesses and individuals to access the worldwide web gave birth to new and innovative marketing and communication with inquirers and/or clients. Today it is inconceivable that one attempt to research something on line and not find multiple references there. The momentum has only continued to mount and new upgrades are available nearly by the day.

This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author's name and all the URLs (links) mentioned in the article and biography must be kept.

Though these bits of advice are one way to prevent crashes and error messages, there are plenty of other Windows registry errors that are more of a challenge to fix.

One solution is utilizing registry cleaners to help eliminate headaches. 6StarReviews.com reports that Registry Mechanic doesn’t simply delete broken file paths, but repairs what is causing the malfunction. For a limited time only exclusively on the site, they’re even offering 15% off the software product. If you haven’t mastered the ‘Add-Remove Issue’ and are bombarded with countless errors and slow PC speeds, registry errors may currently be the culprit.