I want to install windows xp on dell inspiron mini 1018 but i am not able to install.some blue screen comes.please help

If it's connected to a power socket & still the problem persists , the problem is probably with the power supply located in your laptop.

There is a free program from Novicorp. It will allow you to make a USB install Win to Flash. Or, you could use another program to do the same thing.

This is quite easy to do, when your turn on your computer you need to hit a hotkey over and over again. The hotkey is different for each type of laptop but the common ones are f11, f1, f2, alt+0 and f12.
Once you reach the recovery screen you just need to follow the on screen prompts and you're all set
WARNING: Doing this will mean that you will lose all your personal data and installed programs that are on the computer.

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That cursor indicated that the BIOS can't find an Windows installed on the hdd. Since even the recovery partition appears to be inaccessible the only thing left is to reinstall it using the recovery cd that should have come with it when you bought it If you don't have it you can order it from Dell.

Contact Dell for warranty support. Here is a link for support:
http://support.dell.com/support/topics/global.aspx/support/dellcare/byphone_prod?c=us&cs=19&l=en&s=dhs

The Dell Inspiron Mini 10 series of netbooks come with recovery software that can restore your netbook's original factory settings. Dell Inspiron Mini 10 netbooks with Windows XP, Windows Vista and Windows 7 can be recovered to the factory settings using a recovery partition on the hard drive.
Windows Vista or 7
Turn on or restart your Dell Inspiron Mini 10 netbook. Press the "F8" key repeatedly when the "Dell" logo appears on the screen to be redirected to the "Advanced Boot Options" menu.
Highlight "Repair Your Computer," and then press "Enter."
Highlight the language layout you want to use for your keyboard and click "Next." Enter your username and password if prompted. Click "OK."
Click "Dell Factory Image Restore," and then click "Next." The recovery software on some Dell Mini systems may require you to click "Dell Factory Tools" followed by "Dell Factory Image Restore" and "Next."
Click "Next" if you understand the netbook will be restored to its original factory settings. The recovery process will begin.
Click "Finish" when a message appears saying the recovery is complete. The netbook will restart and boot up to the Windows Vista or Windows 7 set-up screen, where you can begin personalizing your netbook.

Windows XP Recovery
Turn on the computer. Press the "Ctrl" and "F11" keys at the same time while the computer is booting up to access the recovery software.
Click "Restore."
Click "Confirm" to begin the recovery process, which shouldn't take longer than 10 minutes.
Click "Finish" to restart the computer and finalize the installation. Click "Yes" to restart the netbook again. The computer will boot up to the Windows XP setup screen


Here is a link which will take you to the site which will allow you to download a ZIP file with a WEB PAGE type service manual for your 1018, after a 45 second wait. (They want you to sign up for premium service but NOT NEEDED) Click again after wait?
After download, open the ZIP file and copy all contents to a new folder. Double click the Contents.html file to open in a web browser, then use the built in shortcuts to navigate the manual.

http://www.laptopmanual.net/manual/Download_Dell_Inspiron_Mini10_1018_Service_Manual/2846/1

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In the bios change the drive options to anything but AHCI if possible. You will need a windows xp driver and USB floppy disk to install the AHCI or SSD driver. It's also referred to as an F6 Floppy. Dell should have the download you need.

The easiest for you, as your new to computer, is by using a utility. Driver Genius and DriverEasy are good utility's !
Manual download & install: http://www.downloadplex.com/Drivers/Netbook/Dell/Download-dell-inspiron-mini-10-1018-synaptics-touchpad_313959.html

For the Dell Inspiron Mini 1012 Netbook, 7 beeps indicates bad memory (system RAM). The memory will need to be replaced.
The RAM can be replaced using a small Phillips screwdriver and removing the back-plate on the bottom of the laptop. When you see the memory (sticks around 3 inches long), pull those out and put new ones in. Make sure it's the correct DDR2 memory.
Good luck!