Hello, I am in a need to install windows 7 from usb flash drive.. everything is OK, i have made bootable usb flash drive.... but the laptop bios do not have the option to choose to boot from usb flash drive.. however it has the options to boot from USB super disk (have no idea what thats it) USB floppy disk USB hard disk USB optical drive .. but no USB flash drive .. I tried to boot it like USB hard disk. but won't work.. says something like that the hardisk is invalid.. please help Any alternatives on what i can do instead of flashing the bios cause i don't have USB floppy to flash it from external floppy nor a floppy disk and its 00:30 at the momment bah.. I really need to install win7, so your ingenious help will be much appreciated! THANKS!

http://www.computerhope.com/issues/ch001366.htm
How to create a bootable Windows USB drive. A common use of a bootable USB flash drive is to use it to boot into Windows. Booting from removable media such as a USB drive allows you to perform diagnostics on a computer that is having trouble booting from the hard drive. You can also use the flash drive to install Windows, instead of using the Windows installation CD.
This guide will outline making a bootable USB flash drive with Windows XP, Vista, or 7. Before we begin, it is important to note that the computer you want to use your bootable USB drive must be able to use a USB drive as a boot device. Most computers built since Windows Vista was released are capable of booting to a USB device. Prior to the Windows Vista time frame, it is hit or miss with motherboards.

To determine if a computer is capable of booting to a USB device, access the computer's BIOS and check the bootable device list. If a USB device is listed, set the USB drive to be the first boot device. If you do not see a USB device in the list of bootable devices, your BIOS is not capable of booting to a USB device.
Note: You may need to have your USB flash drive plugged in when you access the BIOS).

Windows Vista and Windows 7 users To make a bootable USB drive for Windows Vista or Windows 7, you need to have Windows Vista or 7 installed on your computer. It is recommended that you have a flash drive of at least 4 GB in size, to store all the necessary files.
Tip: Before you start, plug in the USB drive and backup any files you have stored on the USB drive. The drive will be formatted during this process and all files on it will be deleted.
Note: You need to have a Windows Vista or Windows 7 DVD for these instructions to be successful.
1. Open an elevated Windows command line window by clicking Start, typing in cmd in the search text field, then pressing CTRL + Shift + Enter on your keyboard (at the same time). You can also access this by navigating to Start, All Programs, Accessories, right-click with your mouse on the Command Prompt menu item and select Run as Administrator.
2. At the command prompt, type cd c:\windows\system32 to change the directory to the Windows system32 directory. Ensure your USB drive is plugged in, type DISKPART, then press Enter. Type LIST DISK and press Enter.

• See our diskpart command page for additional information on this command.

3. You will see a listing of the disk drives connected to your computer. Find the disk number of your USB drive and type SELECT DISK [USB disk #], where "[USB disk #]" is the disk # for your USB drive. It should now state that your USB drive is the selected disk. If you're not sure what disk is the USB disk, eject the USB drive, perform step number 2 again, connect the USB drive again, and compare the results. Usually the USB drive will be the last drive.
4. Type in the following commands, one by one, pressing Enter after each command.
CLEAN

CREATE PARTITION PRIMARY

SELECT PARTITION 1

ACTIVE

FORMAT FS=NTFS
(may take a couple minutes, depending on the USB drive size)

ASSIGN

EXIT
Keep the command prompt window open, but you can minimize it for a little bit.
5. You will now need your Windows Vista or 7 Installation DVD. Put the DVD in your computer's DVD drive. Open up My Computer and note which drive letter is assigned to your DVD Drive and your USB flash drive.
6. Go back to the command prompt window and type in D: CD BOOT (substitute your DVD drive letter for "D:", if necessary) and press Enter. Type CD BOOT again and press Enter. Lastly, type BOOTSECT.EXE /NT60 H: (substitute your USB flash drive letter for "H:", if necessary) and press Enter.
7. The last step is to copy the entire contents of the Windows DVD to your USB flash drive. To do this, in the My Computer window (opened in step 5 above), right-click on the DVD drive and select Open to view the contents of the DVD. Copy all the files and folders on the DVD to the USB flash drive.
Your USB flash drive is now set up to be a bootable USB drive for Windows Vista or 7.
How to or can boot from CD or DVD

Good luck.

You can, but you need to make the USB stick bootable, which will delete everything on the drive and replace it with the Windows 7 install. You need what's called an ISO of Windows 7, which is basically a fancy word for an image of the install CD.

http://www.techverse.net/how-to-create-a-bootable-usb-pen-drive-for-windows-7/

Hello, it looks like somehow the master boot record was erased from the hard drive, maybe viral? You mentioned the hard drive was recognized in the bios correct? If you need data from the hard drive the easiest way would be to pull the hard drive out and use an external hard drive enclosure to remove the data before you erase everything from the hard drive. If you dont need anything thing you can proceed to do a new install of Windows 7. Turn the computer on then hold alt and the f10 key to perform a factory recovery. This will erase everything and reinstall Windows 7. If this doesnt work then you will need a new hard drive and a bootable usb drive with Windows 7 on it. Hope this helps.

***Four steps can help you reset the lost Windows 8/7/Vista/XP/2008/2003/2000 password:

Step 1: Download Windows Password Reset from http://www.windowspasswordreset.net
Step 2: Burn bootable CD/DVD or USB flash drive
Step 3: BIOS setting
Step 4: Reset Windows password

You have not specified your operating system. However I will explain how to do it with windows 7. First you have to create a bootable flash drive. Do it as follows
Format USB flash drive to NTFS format(For Win XP only. Vista users can directly format the USB drive to NTFS format) In your Windows, go to Control panel -> system -> hardware -> Device manager.
Under the disk drives section, right click on the USB storage drive and select Properties.
Go to the Policies tab, select optimize for performance. Click OK.
Open your Windows Explorer, you should see the USB storage drive in the inventory. Right click and select Format. Select NTFS from the drop down bar. Click Start.
For Windows XP,
Download MBRWizard. Extract the zipped files to your desktop.
Open a command prompt (Start -> Program -> Accessories -> Command Prompt).

cd Desktop/MBRWiz2.0/
MBRWiz /list
Record the USB flash drive disk number
Make the USB drive active.

mbrwiz /disk=X /active=1
For Windows Vista,
On the Start menu, navigate to the command prompt entry. Right-click and select Run as administrator.
Type

diskpart
list disk
Record the disk number of your USB flash drive.
Select the USB disk.

select disk X (X is the drive number of the USB flash drive)
List the current partition. Record the partition number.

list partition
Select the current partition and make it active.

select partition Y (Y is the partition number of the USB flash drive)
active
Creating bootable USB flash driveDownload Windows 7 iso (32-bit) file to your desktop (The download link is no longer valid).
Download and install WinRAR.
Right-click on the Windows 7 iso file and select Extract files. Extract the files to a folder (you can name the folder any name you want, but for illustration purpose, I name it win-7) in your desktop.
In your command prompt, cd to the windows 7 folder.

cd Desktop/win-7 (Change the destination to the folder that you have extracted)
cd boot
bootsect /nt60 X: (X is the drive latter of your USB drive )
Now, copy all the files from the Windows 7 folder to the USB flash drive.
Reboot the computer. Remember to change the first boot device to your USB drive in the BIOS.
You should be able to install Windows 7 from your USB flash drive now.

Hello,
You should make a bootable Flash drive.
You will just click on bellow the link and follow all the step.
http://komku.blogspot.com/2008/11/install-windows-xp-using-usb-flash-disk.html

After making the bootable pen drive go to bios setup>Restart>press F2/F10/Dell
Boot from usb.
There are many type of bios setting.
Follow these .
http://www.computerhope.com/help/phoenix.htm
http://www.pcbuyerbeware.co.uk/BIOS.htm
and also set you HDD piority ,Now note it ,Usb drive will be 1st Hdd drive(usb pendrive)

Hope it will solve your problem.You can also repair or change the cd/dvd writer through folloing steep.


Or can do it from this link.http://komku.blogspot.com/2009/09/wintoflash-guide-install-windows-xp.html


Hope it will help you.

This will walk through the steps to create a bootable USB flash drive for the purpose of installing a Vista or Windows 7 OS. These instructions assume that you have a computer with Windows Vista installed on it.
Required:
· USB Flash Drive (4GB+)
· Microsoft OS Disk (Vista / Windows 7)
· A computer running Vista / Windows 7
Step 1: Format the Drive
The steps here are to use the command line to format the disk properly using the diskpart utility. [Be warned: this will erase everything on your drive. Be careful.]
Plug in your USB Flash Drive
Open a command prompt as administrator (Right click on Start > All Programs > Accessories > Command Prompt and select “Run as administrator”
Find the drive number of your USB Drive by typing the following into the Command Prompt window:
diskpart
list disk
The number of your USB drive will listed. You’ll need this for the next step. I’ll assume that the USB flash drive is disk 1.
Format the drive by typing the next instructions into the same window. Replace the number “1” with the number of your disk below.
select disk 1
clean
create partition primary
select partition 1
active
format fs=NTFS
assign
exit
When that is done you’ll have a formatted USB flash drive ready to be made bootable.
Step 2: Make the Drive Bootable
Next we’ll use the bootsect utility that comes on the Vista or Windows 7 disk to make the flash drive bootable. In the same command window that you were using in Step 1:
Insert your Windows Vista / 7 DVD into your drive.
Change directory to the DVD’s boot directory where bootsect lives:
d:
cd d:\boot
Use bootsect to set the USB as a bootable NTFS drive prepared for a Vista/7 image. I’m assuming that your USB flash drive has been labeled disk G:\ by the computer:
bootsect /nt60 g:
You can now close the command prompt window, we’re done here.
Step 3: Copy the installation DVD to the USB drive
The easiest way is to use Windows explorer to copy all of the files on your DVD on to the formatted flash drive. After you’ve copied all of the files the disk you are ready to go.
Step 4: Set your BIOS to boot from USB
This is where you’re on your own since every computer is different. Most BIOS’s allow you to hit a key at boot and select a boot option.
I used these instructions to get my new Dell Mini 9 laptop loaded with Windows 7 (the PDC bits). HTH.