install windows 7 from pendrive, its very easy and convinient

hey dudes, i hv a hp mini notebook, and it has no dvd drives,
so i hv to create a bootable pendrive, i have tried many processes but non of them works.
so people follow this psot and you can easily install windows 7 from pendrive.

1.at first you need hp format tool. dis software cane be downloaded from

2.you will need a pendrive minimum 4 gb.
3. format it with hp format tool in fat32 format.

4. open the windows 7 iso file with demon tools or magic iso, if the os comes with a iso image. it will look like this-

5. u can see there is a file named BOOTMGR. just change the name with NTLDR.
making bootable pendrive is finished.
6. now you have to restart your machine and change first boot device to pendrive in bios.
machine will boot from pendrive and just follow the instruction to install windows 7.
.