computer display not working but everything else is

[cammy454]

ok so last year christmas i got a new desktop computer i played on it for 2 weeks then my mum boyfriend took the PSU in it then he tryed one of his and it didnt work then he payed for a brand new psu puts it in nothing show on screen but stuff is turned on i dont know what happened really but i want to fix it as it was my christmas gift ive lasted 4 or 5 mounths without my baby working i dont know much about desktops tho so if i need to do something please explain how oh and heres my specs i know GPU:gtx 670 geforce by asus. motherboard: maximus viii hero. CPU:intel core i5. PSU: i do not know. RAM:8gb corsair ram stick X2

 

[ihog]

We really need to know what your PSU is. Can you please open up the computer and find out?

 

[cammy454]

ok i will