First things first, check installer if 100% working, then dvd drive if cd/dvd disk gamit mo / then cross check flash drive version sa usb port version na supported ng gear mo. If good naman ung dalawa at win 7 up iinstall mo use lower version na windows sa pang format lng sa disk drive then gamitin mo na ung prefered os direct kana installation. If ayaw pa din gamitan mo linux sa format then windows install.