Boot priority for entel atom - Acer Aspire One D250 (99802378332) Netbook

To boot from a CD, DVD or USB device, make sure that the device has boot sequence priority over the hard drive.

BIOS Boot

BIOS (Basic Input Output Subsystem) is a programmable chip that controls how information is passed to various devices in the computer system. A typical method to access the BIOS settings screen is to press ESC, F1, F2, F8 or F10 during the boot sequence.
BIOS settings allow you to run a boot sequence from a floppy drive, a hard drive, a CD-ROM drive or an external device. You may configure the order that your computer searches these physical devices for the boot sequence.
The first device in the order list has the first boot priority. For example, to boot from a CD-ROM drive instead of a hard drive, place the CD-ROM drive ahead of the hard drive in priority.
Before you set boot priority for a USB device, plug the device into a USB port.
To specify the boot sequence:

1. Start the computer and press ESC, F1, F2, F8 or F10 during the initial startup screen. Depending on the BIOS manufacturer, a menu may appear.
2. Choose to enter BIOS setup. The BIOS setup utility page appears.
3. Use the arrow keys to select the BOOT tab. System devices appear in order of priority.
4. To give a CD or DVD drive boot sequence priority over the hard drive, move it to the first position in the list.
5. To give a USB device boot sequence priority over the hard drive, do the following:
   • Move the hard drive device to the top of the boot sequence list.
   • Expand the hard drive device to display all hard drives.
   • Move the USB device to the top of the list of hard drives.
6. Save and exit the BIOS setup utility.
7. The computer will restart with the changed settings.

Boot Priority Options

Some computer manufacturers allow you to select the device that contains the boot sequence from a special device selection menu. The example below uses a Dell system board.
To set boot priority using a device selection menu:

1. When the computer starts to boot up, after the manufacturer's ID screen, press F12 several times. The device selection menu appears.
2. Use the up and down arrows to select CD-ROM or

won't boot at all?
it's probably the BIOS settings
go to the BIOS settings by pressing F8 or DEL
go to advanced settings
look for "boot device priority" or something like that
set the first priority device as your harddisk
save & exit,restart,happy computing

the "boot device priority" maybe not placed on advanced setting,each BIOS has different interfaces,just look for something like that,it's easy

I had this same problem and then I read the manual "press and hold F12 while powering on the computer" after about 10-15 seconds the boot menu appeared! :)

it seems that your windows has crashed.insert new window installation disc and chage the boot device priority and give the 1st boot priority to cd rom and 2nd boot priority to hard disk and then disable all other boot device. then install the windows.

It seems as if you have some of your boot priorities out of skew, specifically having booting through your network connection as a higher priority. In order to fix this, you need to go into your bios settings and rearrange the boot settings so that booting from LAN is either disabled or not the top priority and making booting from CD or HDD the top priority.

you have to change the priority of the boot device for booting the os .means if you are booting the os from the cd rom then change the priority to cd rom to first position and if you are using the pen drive then change the priority to pd to first position.

When turning on your computer, there should be a screen display either in your brand logo that promts to press a key to enter setup,bios etc. or boot priority. If it takes you into the BOIS menu, go to the boot tab, and change your boot priority to usb as first boot priority. Save and exit, you should be good to go. Should boot from the usb dvd.

There's no need to reset your BIOS, only you do is to set in your BIOS Setup to boot priority like for example First Boot Priority is your CD/DVD Rom Drive, if you got some Bootable System Disc then the Second Boot Priority is your Hard Disk Drive. Good luck!

Try pressing F12 while booting or DEL etc. as some PC's have a seperate boot priority menu from the BIOS.  Once you can boot from the install cd you can use it to fix your master boot record by entering the recovery console and using the command fixmbr.  Hope this helps :)

Ntldr is file important for boot up and is present in main boot drive, so you can copy it from your sata hard drive to pata, it would at least boot up, also sometimes there may be a req of changing more than one bios option to boot from other drvi, try it