Computer boots but displays nothing. Is it possible i need a new CPU? (details inside)

[the-gaming-alien]

Hello folks, a couple days ago everything was fine untill i turned my pc off for the night. After that, the computer seems to boot up but does not display anything at all on screen (screen keeps saying "no signal").

Specs:
Mobo: GIGABYTE 78LMT
CPU: AMD Phenom II X6 1055T (6 core 2.8ghz)
GPU: AMD ATI Radeon HD 5770
RAM: 2x4gb
PSU: acbel ce2 450

Here's a couple of things i have tried so far:
Switching HDMI cables.
Testing video card in different computer (It worked).
unplugging power cable and holding power on button for 30 seconds.

I don't believe it would be the motherboard since it is still very new (2 months old). I do not own a multimeter to test the power supply sadly. Is it possible that my cpu has just had it's time (4 years old)?

Any and all help will be greatly appreciated!

 

[vesp3r]

did you test your monitor?

 

[the-gaming-alien]

Yeah, the screen i am using is also a TV which is working fine.

 

[vesp3r]

hmmm before you turned off your pc did you installed new drivers or maybe windows update?
Also how is your PSU doing? have you tested it?

 

[V1ctor89]

If your Mobo has integrated grapchics (thus a VGA port on the back) use that to see if it works. You may also check the connectivity inside and the cables.

 

[the-gaming-alien]

If your Mobo has integrated grapchics (thus a VGA port on the back) use that to see if it works. You may also check the connectivity inside and the cables.

I tried the HDMI port on the motherboard and it still did not work. Should i try test it with a VGA cable or would it make no difference?

 

[V1ctor89]

Yes, test it with a VGA cable (with both ports - integrated gpu and the HD 5770). The HDMI one may be the trouble here. You never know....

 

[the-gaming-alien]

Yes, test it with a VGA cable (with both ports - integrated gpu and the HD 5770). The HDMI one may be the trouble here. You never know....

Just tested both ports on both the gpu, motherboard and TV/Monitor. Still sadly, no luck.

 

[Mistablanco]

Try taking the battery out of the motherboard for about 60 secs then putting it back in. Did you try updating your bios recently? This happened to me a while back back when I tried to install a bios update from an online site.