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if you're using Windows, just insert a recovery disc and a lot of time it will fix it, if that doesn't do it , clean install, sometimes the hdd could have a problem not related to windows at all but sometimes they will just not read right and need to be reformatted.

When Windows fails to boot it is normally caused by a user installing a program or device and it has caused a conflict with one or more other programs. This will no doubt give you plenty of heartache if you're not certain which program caused Windows to not boot up.

If you recently installed a program or application and know where it was installed,you may be in much better shape as for as correcting the error. Here are common ways to correct the problem of your computer not completely booting up or not booting up at all.

If your computer will not boot-up at all,hopefully you have made a good emergency boot disk. You can always make a windows startup disk by creating one from another computer running Windows 98 or Me. Perform the following if your computer won't Boot-Up At All.

FIRST: Put your boot floppy disk in the floppy drive and turn on the PC.On some computers, you may have to access the bios and select the Boot priority to your A: drive. Save any changes and select "Start Computer without CDROM support" and press Enter. Once you are at the A prompt,type dir c: and press enter.

If your programs and other files are present,try restoring your system Registry by following the steps below.This may repair Windows,the Config. Sys and autoexec.bat files to where the PC may boot up normally. When the files are present, it's a good indication of a good hard drive.

SECOND: To correct the problem of your computer not booting up,type in "fdisk /mbr" and press Enter to restore your master boot record.Type "Scandisk C:" to check the hard drive for errors that have occurred. You can also type "Sys C:" to hopefully restore files needed to boot up your computer.

THIRD: If the above procedures fail to repair your computer,you can repeat the first part of step one above and select "Start Computer With CDROM Support" re-install Windows.

Making A Windows XP Bootable Floppy Windows XP users should create a boot disk now by placing a formatted blank diskette in the A: drive, open Windows Explorer to the C:,select Tools,Folder Options ,show Hidden files and and folders,then View Tab. Now you uncheck "Hide Protected Operating System Files (recommended). You will see a warning and click Yes and click OK. Copy the files ntldr,ntdetect.com and boot.ini onto the disk. Remove the disk and label it the Windows XP Boot Disk.

After making your boot disk, recheck "Hide protected operating system files and folders (recommended)" in the Folder Options dialog box. To use the disk when Windows XP won't boot,place the disk in the drive,and unto re-booting,the computer, Windows simply bypass the basic boot files on the hard drive and continue to boot up.

If The PC Won't Boot Past Windows

FIRST: If your Operating System is Windows Millennium,turn on the computer and immediately press and hold down the CTRL key. Once the startup options appear,release the CTRL key. Select Safe Mode and press Enter. You are now in Windows limited version. If you know what caused your computer not to boot,you can now either change or delete that program.

SECOND: Repair your Registry by selecting Start,Run and typing "scanregw /fix" and press enter. This will fix any damage done to the Registry. You can also restore your registry which replaces your current registry with an earlier copy that was backed up by your computer. Click on Start,Run and type "scanregw /restore and press Enter.

To repair your Windows 98 Registry,hold down the CTRL key as you start the PC and select "Command Prompt Only". Type "scanreg /fix" and press Enter and "scanreg/restore" to restore a previously saved copy of the Registry.

If you have Windows XP,press F8 after rebooting the PC should Windows freeze while booting up. You can select "Last Known Good Configuration" after rebooting to allow the computer to boot the last backed up files.And you can choose "Safe Mode" to remove any files you know caused the operating system to hang up.

Be prepared when your operating fails to boot. It would be a great idea to go over this article a few times and print it. Make yourself s notebook and place this and all related articles there.

If your computer fails to boot or begins to become unstable,you can refer to these articles to make corrections that are needed. Learn these steps from your television set with the PC Super Pack.

Be sure to note any changes you make to your Registry and if you're not sure,its best to find a friend that's PC savvy first. Above all,be certain you backup your registry before making any changes and know how to restore as well.

First things First: PC is not booting up, not even BIOS is shown:

Check the Power Supply.

See if the SMPS Fan is working.

Open the Case and see if the Motherboard LED is Glowing.

Remove all the add-on cards and have only a single RAM (if you have more than 1).

Reset the BIOS (check motherboard manual).

Try to Boot.

Watch for Motherboard beeps.

Have a POST guide and try to figure out the post code.

If BIOS is OK and problem with Booting of Windows/Mac/Linux see above.

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7y ago
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15y ago

a computer may not start because of a bad motherboard,CPU(Central Prossecing Unit),a bad power supply is a common reason for computer not starting,or your computer has to much power being stressed on it so you must take some your agp items out and check voltage and voltage on power supply to make sure you can run that much even allthough your mother board maybe has 5 agp slot your power supply cant run all that also CPU caused my old computer from running or turning on cause i had bent prong on it then ounce i had another bad CPU that crashed because motherboard fried it also fried 2 my 2GB memory chips that shows how strong that motherboard really is

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11y ago

it could be a couple of things one the battery could be dead or your computer could have froze but if your smelling like it is burning it is either over heating or the wires are burnt in side of it which means your computer will no longer work :(


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If it was working properly a day or so before, plug and unplug all of the wires to and from the computer. Check that the electrical outlet is live, perhaps by plugging a lamp into it. Make sure that the monitor is turned on. Is the power light on on the CPU of the computer?

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15y ago

Maybe you haven't plugged it in properly, check the wires to see if they are all connected. Or has your computer got a different password and you have forgot it. Maybe your computer has a virus and won't let you on it. Check all of them.

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14y ago

i installed windows 7 from a flash drive and it wont boot up... it says installing pre. wondowss and then it restarts and then says the samething all over again! i no i made the mistake of doing it off the flash drive... i want to be able to go back to the previous windows that was installed... but idk how i backed up everything on the computer before i started the install please anything will help!

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9y ago

If your computer won't start up, check to make sure that it is plugged into a direct outlet. Sometimes the draw of a computer might be too much for an extension, and plugging it directly into the wall will work.

If your computer is plugged into a wall outlet, but still is not coming on, it could be a number of different things ranging from power supply issues to motherboard issues.

If you are not well-versed with computer hardware, your best solution would be to take your computer to a local repair shop. I would not suggest going to GeekSquad.

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13y ago

Well, maybe it's not plugged in? Could be a system board failure; maybe the operating system is corrupt.

No way to know unless you take it to a repair shop.

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9y ago

The laptop may not start up if there is not enough charge. Another reason would be a hard drive failure.

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Q: Why would your computer not boot up?
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Related questions

What would cause a computer not to boot up?

no dvd


Boot up a computer?

If you are asking how to boot a computer, all you do is turn it on. It boots up on it's own after the power is on.


When you power up a computer by turning on the power on switch this is called a boot. If your computer is already on and you restart it this is called a boot?

If the computer is off the boot is called a cold boot or initial startup.If the computer is on the boot is called a warm boot or restart.


What happens when you turn on the computer?

The computer will boot up.


The difference between a cold boot and warm boot?

A cold boot is done by completely powering down the computer to off and then starting the computer fresh. A warm boot is restarting the computer without powering the computer off.


What does it means to boot a computer?

Turn it on when it is completely off.


Which process refers to starting up a computer?

its called a "boot-up"


How deos a computer know what to do?

Your motherboard (commonly called your processor) is the brain of your computer, it tells your computer what to do from boot up to shut down, it tells your hard drive to boot up Windows when you boot up your computer, and to shut down Windows when you turn it off. It controls every piece of hardware in your computer.


Does the CPU have the information for the computer boot up?

No.


What are some idioms about computers?

to boot up your computer


What is the partition used by operating system to boot the computer?

Most operating systems uses the boot partition to boot the computer. In some operating systems, both the system partition and the boot partition are used to boot up the system.


What is the main window when you boot up a computer?

The window when you boot up your computer is called the POST, Power On Self Test. It is bascially checking that all of your hardware is connected and has power.