how do i factory reset my computer it is compaq 6720s and windows 7 ultimate

lolololol

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Nov 15, 2013
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help me
my computer is laggy so i am formating it now to let my post this i am going to post junk as it says i have not enough detail lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
 

2x4b

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Oct 28, 2013
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Typically, the manufacturer will have a "recovery partition" on the hard drive.
Go onto the BIOS and boot to this partition, and it will give your the opportunity to wipe the existing primary partition and re-install the OS.