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You simply can not uninstall an OS (operating system), you may have to Format the hard drive itself. If you are upgrading the OS to a version that uses NTFS, like windows xp or higher, a format is suggested. If you have a boot diskette, you can do it that way. If not you can create on using windows 98, but you will need an old floppy diskette and a drive to boot. If you have a newer OS on a CD, simply insert into the computer and follow the on-screen instructions. If you have a boot diskette(floppy), turn off your computer. Insert the disk and turn on the computer. Let it do its thing, once the diskette loads small programs, you will be able to format the HDD(hard drive). you will see something like this after its done loading...
type in format c: shown like this...
A message will pop up, saying: WARNING! ALL DATA ON NON-REMOVABLE DISK DRIVE C: WILL BE LOST! Proceed with fromat? (y/n)
If you are sure you want to erase everything, type in Y. The computer will now format (may take awhile) and will be ready for a new operating system!
Hi there. My name is Alex and I am here to help solve this problem
Depending if the BIOS has legacy USB support for keyboard and mouse enabled, you should be able to run safe mode by pressing F8 before the computer boots into windows. I would not recommend going into the BIOS if you do not have much knowledge to the computer as one wrong configuration could cause some behaviour problems or even damage to the pc's components
I recommend connecting a keyboard and mouse that have cable and the PS/2 connectors (purple and green) which can be found at back of the computer at the top. Then restart your computer, hold down F8 and you will be able to run safe mode. The mouse and keyboard will then work
Keep both the keyboard and mouse plugged in and boot windows. When you get into windows, plug in the USB keyboard and mouse into a USB slot and wait whilst it detects it. After a couple of minutes you should be able to use your USB mouse and keyboard and take out the PS/2 keyboard and mouse
I hope this has helped. Please let me know if you have any questions or need further assistance.