Depends on what you are doing. If you are doing a Windows upgrade from 7 to 8 or 10 then no, they have support for that. If you are removing Windows completely and adding a Linux Distro then yes, so create a backup before doing so.
smash the thing to pieces
Remove one of the OSs.
Most operating systems can only be removed by formatting the hard drive, and then installing the operating system that you desire. The drawback to this is that you will lose everything that is on that partition of the hard drive. Example : if you have a computer with Windows Vista but you want to put Windows XP on the computer you have to wipe (format) the hard drive in order to load Windows XP. This means saving all your documents to a CD or another hard drive or another partition. If you want to upgrade to a newer operating system then this can be done without losing your information, but some programs may need to be reloaded. Hope this helps. ----
Use a Boot up CD or Boot up Floppy to format the C: Drive and then install ur Operating System. to create a boot floppy go to control panel -- > add and remove prog -- > the last tab (creat boot disk)
Viruses and Worms can be difficult to remove from a computer. Software tools are required to remove viruses and repair the computer code that the virus has modified. These software tools are provided by the operating system manufacturers and security software companies. Make sure that you download the tools from a legitimate website. There are a few ways to go about doing this. For beginners. Create a restore point in case of a problem with the update. Check the updates to ensure that you have the latest ones. Download the updates using Automatic Updates or from the Operating System manufacturers website. INSTALL the update. Restart if required, but you shouldn't need to.
You buy a new operating system and install that.
smash the thing to pieces
Remove one of the OSs.
reload your operating system
In computer terminology GDB means GNU Debugger. Its a program that if installed on a computer will look for and remove bugs from the operating system.
You need at least an Operating System Like Windows or Linux to work on the computer, if you remove that one too then you need to reinstall it , so as to work on the computer again.
The ONLY sure way is to remove the hard drive and destroy it completely. Less drastic measures that work for most users would include formatting the hard drive and reinstalling the operating system. Short of that, anything you do will leave traces that can be followed and recovered.
Add a new administrator / user and delete the old one or Format the computer and perform a clean installation of the OS
The more you change things on your computer the more fragmentation of your computer memory you are making. here are some computer operating systems that will automatically reduce the amount of fragmentation you will have. Most computers will still have some fragmentation of files on the hard disk. You have, as part of the operating system of your computer the ability to 'tidy up', or remove fragmentation mostly running the operating system defrag program. This will mean your computer will put everything you use most at the easiest to access end of your memory, this means that the computer works as fast as it can
If your computer randomly restarts while using it, your computer may be overheating. Check your computer for dust and remove if necessary. Random restarting could also be due to malware or operating system damage. If this is the case, ask your local computer shop about computer repair.
Most operating systems can only be removed by formatting the hard drive, and then installing the operating system that you desire. The drawback to this is that you will lose everything that is on that partition of the hard drive. Example : if you have a computer with Windows Vista but you want to put Windows XP on the computer you have to wipe (format) the hard drive in order to load Windows XP. This means saving all your documents to a CD or another hard drive or another partition. If you want to upgrade to a newer operating system then this can be done without losing your information, but some programs may need to be reloaded. Hope this helps. ----
I you want to install Microsoft products on a computer without a Microsoft operating system, you might want to get an emulator. If you are using Windows, try Control Panel > Add or remove software.