My Pc Has no Boot mode

Ismail Salad Osman

Estimable
Feb 7, 2015
2
0
4,510
Hi, homies. i have a small company and i sell computers and their accessories thought im not IT technichian but sometimes i repair my Computers, so there is a problem that i met mostly when i want to install windows OS to a new Computer (The one that i want to repair it now is toshiba Satellite c50-A635) it says that there is no bootable device -- Please restart system, and if i insert the disk and hit F12 then choose the CD/DVD (where my installation is) it says "checking media" and after while it repeats again "No bootable device" i googled it and finally i realized that there is no Boot mode in the system configuration. so If there is someone who can help please im appriciated, thnak you very much!
 

Ismail Salad Osman

Estimable
Feb 7, 2015
2
0
4,510


Its a laptop and yes ats alrady installed windows 8 and the Os that i want to install now is windows 7, its now not used before