Monitor wont recognize pc input

[eloucas20]

Hi,

I bought a second hand gaming PC yesterday and Im now quite disappointed.

Spec-
Gtx 1050 ti
I5 6500

First of all, the cpu was over heating and hitting 90 degrees. But i think fixed that?
But now my monitor wont recognize my computer. I plug the hdmi into the gpu and the intergrated graphics card but still no input?
Is the cpu dead?
Is the gpu dead?
How do i know which to repair?
Thanks in advance to any replies

 

[jay32267]

How do you know it was hitting 90 without having a working display?

I would try the monitor on something else.
I would try another HDMI cable.

 

[eloucas20]

As it was working until i checked the cpu and realised it was overheat.