Eto methods ko para dyan.
Procedure 1 (Official/Traditional way of reinstalling Windows)
Needs:
1. Blank DVD
2. A copy of Windows .iso (Windows XP, 7, 8, 8.1 or 10)
3. USB, IDE, Or SATA Optical Disk Drive
4, Burning Software
Search Online for this method
Procedure 2 (The most popular way)
Needs:
1. USB Flash Disk, Flash Drive, Thumb Drive or whatever you call it.
2. A copy of Windows .iso (Windows XP, 7, 8, 8.1 or 10)
3. Rufus, Unetbootin or Windows USB/DVD Tool
Search Online for this method
Procedure 3 (Uncommon way if you have nothing in your hands but internet connection)
Needs:
1. EasyBCD Software
2. A copy of Windows .iso (Windows XP, 7, 8, 8.1 or 10)
3. WinRAR
3. Sufficient space on hard drive for another partition (You will extract windows on it)
Eto yung whole procedure neto kung nakuha mo na requirements sa taas
1. Open run command on start menu or simply use shortcut WindowsKey+R
2. Type diskmgmt.msc and wait for it to load
3. Right click a partition with 30-50 GB of free space and click shrink
4. Type in atleast 7-10GB or 7000-10000MB (disk management format)
5. Wait for the process to finish (it may take up to 30 minutes it depends on the contents of your HDD)
6. If the process is finished, You will see an unallocated chunk of your HDD below (in black)
7. Right click that and select create New Volume
8. Name it Windows Installation or anything that you wouldn't be easily confused with
9. Select drive letter and make it anything (I prefer using Z

10. Format as NTFS and make all options default
11. If the process is finished, open your .ISO file and open it with winrar
12. Extract the ISO's contents in the new partition that you made.
13. After you finished extracting the .ISO Open EasyBCD and Run As Administrator
14. In EasyBCD Interface, go to-> Add New Entry -> Click WinPE-> Select the Path to the extracted file on the new partition-> (it will look like this: "Z:/sources/boot.wim") select boot.wim.
15. After you selected the path, Name the boot option, "Windows Installation" then tick "Add Entry"
16. In EasyBCD Interface, tick Edit Boot Menu, and just tick save.
and then Magic! haha! after you restart your PC you can select option to Windows Install and it should start Windows installation as soon as you selected it on boot.
NOTE: Do not Delete the partition where you extracted your .ISO file or else you will ruin everything.
Di ko alam kung may video tutorial to kasi nabasa ko lang din to sa kabilang forums, pero anyway, if you want to try it out, di ko cya nirerecomment sa newbies. medyo unclear yung instructions ko kasi walang pictures maybe someday in the future, gagawan ko dito yan ng tutorial, di ko rin alam kung may nakapag post naba to dito pero Good Luck!