Aap Sub ka kya haal hai Umeed hai sub thek hun gey

Mere dost k Paas Pc hai os men Kohi b "Windows" Install nahi ho RAhi Jab Hum CD Boot karty hain tu boot ho jati hai os k baad "Press any keys .... " ye wala step b ho jaata hai or is k baad saari screen Black ho jaati hai or kouch b nahi hota
Agar kisi ko Pta hai k kya Maasla hai tu plz Bta den or is ka hal b.