Windows 7: Repair install windows through usb

hi
i messed my 7 while messing with the authui file . i need to reppair install it.
my comp dosn't read dvd so please can u tell me hw to install Windows 7 without deleting the files(i can't logon)


sorry this in a hurry so spelling mistakes

Hello juman, welcome to Seven Forums!


Use this tutorial at the link below to put the Windows 7 installer on a USB stick, then boot that and the first thing to try is an sfc /scan, have a look at this second tutorial and be sure to post back with any further questions you may have and to keep us informed.

You have to be booted into Windows to run a repair install.


USB Windows 7 Installation Key Drive - Create

SFC /SCANNOW : Run in Command Prompt at Boot

in school when i get home will try it out

Be sure to post back here to keep us informed.

didn't work. i tried to set the first boot device to the USB but my comp cant read the USB. Please help.

Too bad mate, the only option I can think of is to use an external DVD reader.

Doesnt look like you tried hard enough. Use a different usb stick and try again. That stick that didnt work, try booting from it on a different computer- that'll tell you whether the stick is bootable or not.

it worked on my sis comp

i cant afford it. too bad for me.

Run SEtUP.EXE from Windows Desktop, As this tutorial: Repair Install