can anyone tell me how to remove ubuntu from my system and reinstall windows please

Just put the CD/DVD of Windows , boot from there and install . What is the problem ?

The only thing you have to be careful is to set CD/DVD first device in BIOS , to read from there.

thank you for your swift answer Nikth.. the problem I have is that ubuntu will not allow me to run any discs at all ANYthin Itry to download or run on ubuntu is instantly blocked by ubuntu with error messages telling me that it cannot allow file to run it may be corrupt I have tried both my microsoft disc and my xp pro disc (both are origionals) ... this is a problem accross the board with Antything I try to down load .....it WILL down load but it will not let me run it or execute it, I have asked in forums here but recieved NO help of any use I am fed up getting told the same thing that has nothing to do with my problem so id rather just get rid of it and reinstall windows can you help please

Ubuntu can't stop you booting from a CD.

The most likely problem is the BIOS is blocking you. Most computers have an option to go into bios settings at start-up. The method varies by manufacturer but it will be a certain key press at the right time.

Go into the settings make set the first boot device to CD/DVD. Put your windows disk in and reboot. Ubuntu wont even start so it can't block anything.

If you can not see how to get into bios settings, or how to change it once you are in let us know the make and model of your computer. Someone hear may have one and be able to give you step by step instructions

As Warren Hill said , Ubuntu has nothing to do with BIOS or installation of a new Operating System. Probably you use the wrong way to install Windows.

First you have to boot INTO BIOS configuration page and set as FIRST BOOT DEVICE the CD/DVD. Then hit the appropriate button to save this configuration. Then insert the CD/DVD of Windows and restart. It SHOULD automatically start the Windows installation process. That was it. Done.

Thanks

ok firstly I am NOT doing it wrong ,and if Ubuntu cant effect a disc instalation then its funny how I never had ANY problems before I installed ubuntu so dont tell me if im doing something wron ... you have no idea what im doing and for your information I had a computer repauir guy look at it and he even said the same that ubuntu is preventing it
As for me using windows ... I can read and I do exactly what it says in both the ubuntu manual and the windows manuals (for instalation) so dont you tell me if im doing something wrong cos you have no FKN clue

put it this way help me get this monstrosity off my compures and ill make sur eyou NEVER hear fom me again .... you wont even hear from any of my friend or family .... ill make sure they dont install it

You don't run the CD from inside Ubuntu to install WIndows. You make the OS boot from the CD before ANY OS starts to boot. This is not an Ubuntu issue and your issue is with Windows. You need to change the BIOS boot order so that the CD is the first boot device and the installation will kick off.

This is NOTHING to do with Ubuntu.

yea ive already done that Actionparsnip ive tried that with both the versions of windows I have here one of which is brand new fresh out the box and it still goes straight to ubuntu then tells me that ubuntu does not run this programme so ive do the cd section first and rebooted it, ive followed ALL the instructions in the ubuntu manual and I have called the windows helpline all seem to point at a problem with ubuntu ....perhaps you need to accept that on this occasion perhaps you ar ewrong and ubuntu has messed up
so any other smart ideas cos those ones dont work

then ou haven't changed the BIOS to boot CD

Its still not an Ubuntu issue

u calling me a liar !!! I HAVE DONE ALL THAT AND THE MESSAGE I GET IS AN UBUNTU MESSAGE SYING THAT ITS NOT ALOWING IT do you not understand Englinsh ... I know what im seeing and I know what is happening in front of me how the heck can yo usay other wise ... I know what im looking at it IS an ubuntu issue if it wasnt then my computer would have allowed it
you do realise even Steve Jobs admioted that apple isnt perfect but its getting there, yet you seem to thin ubuntu is parfect even twhen someone is telling you it is not thought their own experience ... im not a liar I know what im doing and what im seeing .... I think you need to go learn some manners parsnip

Did you try Ubuntu live CD and from there run Gparted?Try that and with Gparted delete existing ubuntu partitions, and if you want to make NTFS partition.

http://www.hiren.info/pages/bios-boot-cdrom

thank you zvacet and nikth for giving me a straight forward answer and NOT commenting on weather I know what im doing or not and trying to make me look thick, thank you both again Iwill try your iedeas and get back to you ...again thanks

ok tries both neither has worked tried runningthe disc and a message comes up saying 'cannot run 32 bit from thins platform. unable to run programme'
tried runnung uduntu liva cd system would not rung the cd ...... can some one please help

when I running the Ubuntu cd a window apears asking me if I want to boot system when I press 'boot now' nothing happens

What's the make and model of your computer?

If you boot from a windows CD it will allow you to replace whatever is on the hard drive. Ubuntu will not run so it can't possibly get in the way.

So we need to need to look at why you do not seem to be able to boot from the CD. When you boot there will be a key, or combination of keys to press to go into bios settings from there you will be able to set the CD as the boot device then let Windows install.

If you let us example on many Dell Asus and Acer laptops you have to press F2 soon but not instantly after start-up but before the OS starts to get into the bios settings. Other makes may be different but, if you let us know the make and model, hopefully someone here will have the same computer and can give you step by step instructions.

its an acer5315 ive menaged to get into bios and I have managed to get the cd to number one but it still seems to be going to the ubuntu os

I have an Acer Aspire 5332 here which is probably similar pressing F2 when you boot takes you into the bios settings

from there use the right arrow key 3 times to get to boot settings

use the down arrow to get to the CD Drive then press F6 repeatedly to get it to the top of the list.

Now Open the CD and put your windows CD in. Press F10 to save and it should boot from the CD installing windows and replacing Ubuntu