Windows 10: My computer is not starting plz read and help me out ...

My computer displays "choose an operating system " when started and then i choose windows 10 normally . But today i started my pc and the "choose an operating system " screen is coming but now it is not showing any option to choose nor windows 10 niether windows 7 , and when i click on "change defaults or choose other option " it displays 3 option change the timer , choose a default operating system and choose other option . In "change the timer " it displays curremt settings %1 , in the choose a "default operating system" it displays The current default is %1 and in the "choose other option

:)

 

Computer Start Up Help

I need help plz. sometimes i start my computer up it only shows a blank screen and doesnt move on it seems like it does read the hard drive or something and it makes a different noise than when it starts up right....i dont know what to do so can someone help me plz? if u need more info just ask*Confused

 

hello plz help me plz plz

thank for helping but the link you shared i cant understand because i dont have sufficent knowledge of computer plz tell me step to step
how we create a bootable copy using pen drives....

i have window 10 professional

 

is it possible to hand build a motherboard?

Might I suggest you simply build a computer, making notes and taking pictures step by step. Most people (probably including your teacher) have no idea even where to start building a computer. You'll do fine, and if you get stuck we're here to help ya out! *Toast :toast: