How to delete operating system . - Dell Inspiron 1525 Laptop

When deleting the operating system you have to have a restore disc or the master disc for an Operating System to be re-installed again. You will then have to insert the Operating System disc in the drive and then restart select boot from CD or DVD whichever you have on your lap top then you will have to format the drive with this disc it all should just do it for you select complete install. This will wipe files currently on the hard drive and enable you to restore your machine back to its original condition as you purchased it.
You computer should be by default to boot from CD ROM first boot. If not get to the BIOS press F2 when the system first boots it will take you to the BIOS then set in the BOOT order as first boot being CD or DVD first boot and hard disc second boot. Then restart and have the Operating System Disc in. If you do not have an operating system disc that came with your computer you can get one from Dell just order it and use this disc. Do not try to install just the basic Windows because Dell has all of their drivers installed on their restore discs and you will play heck trying to get the drivers. Unless you have a legal copy of Win 7 go ahead and go for it then. Making sure to be online when installing Win 7 so that it can seek driver files during the installation.
I hope this assisted you. Thanks for using FixYa for all your questions. John

Hi , you cant delete your operating system , if u have any problem with your operating try to reinstall the operating system by formatting. if u don't know how to format or reinstall the go to nearest customer care service centre.