My computer turns on but nothing displays on monitor...?

[Learner]

i have doubts that there is some problem with the power supply inside my cpu but dont know how to diagnose and troubleshoot that problem??? plzzz can anyone help??

 

[Fantina]

that once happened to me and it turned out i had to get a new monitor because we called a computer place and said they couldn't fiix it

 

[BenL]

If absolutely nothing shows up on your monitor, the monitor could be the problem.
Check the connections, try connecting your montior to another machine, and figure out what the problem is.