Is this a laptop or desktop?
Is it under warranty?
What is the brand and model of your computer?
Does it have windows xp/ vista/7,etc?
Can you remove both the charger and battery, then turn on the laptop with only the charger connected (without battery)?
Is there any beep?
Can you connect an external desktop monitor to the laptop and check?
What are you using now?
Is the laptop under warranty?
you can try to re-seat memory, but kind of compliated
remove some screws at the bottom of your laptop to remove a cover
then press outwards the two sides to remove memory
memory looks like below:
Then insert only one memory stick and check
put in one stick only
Try the other memory stick only
there is only one stick?
If you do not put in the memory stick, can you turn it on?
Sorry it is hardware issue,
Please check warranty at:
If it's under warranty, then it should not cost
But if not, it could be expensive as the systemboard needs to be replaced.
Please click on Accept to show I have assisted you.