Monitor not receiving signal and PC shuts down after 20 seconds

[dct048]

Yesterday I put a new PSU in my wifes PC and my old gpu. It worked fine and after some time away from the pc it had gone in to sleep mode. It would not come out of sleep and when I turned it back on the monitor is not receiving and the PC shuts down after 20 seconds. I am a little confused as it worked fine all day yesterday.
HP pavillion
I5 processor' not sure exact one but will be a few years old.
Motherboard, HP iPMB7 MP

 

[freercurse]

From what it sounds like, it could be an issue with the gpu or the psu, as it is not posting, begin with that. try re-seating the card (taking it out and putting it back in.) try with on board graphics if applicable and another gpu if applicable. if these have been done, then we can be sure that it is not the gpu and can move onto other things.

 

[dct048]

From what it sounds like, it could be an issue with the gpu or the psu, as it is not posting, begin with that. try re-seating the card (taking it out and putting it back in.) try with on board graphics if applicable and another gpu if applicable. if these have been done, then we can be sure that it is not the gpu and can move onto other things.

Sorry should have said, I have removed the gpu and replaced the psu with the original one and it is doing the same thing. I have also taken the mobo battery out for 10 minutes and replaced it but still nothing.

 

[freercurse]

and you know the gpu and psu works on other devices? is it posting fine?

 

[dct048]

and you know the gpu and psu works on other devices? is it posting fine?

Yes they work. I am resigned to the fact the mobo is gone but thought it worth a try asking here before trying to get hold of a new one.

 

[freercurse]

Yeah that 's what it sounds like,can you get into the bios?

 

[dct048]

Yeah that 's what it sounds like,can you get into the bios?

Not getting any signal to the monitor.

 

[freercurse]

are you currently using intergrated graphics, because if so, you will need to turn that off when the new GPU is in.

 

[dct048]

are you currently using intergrated graphics, because if so, you will need to turn that off when the new GPU is in.

Yes I turned those off when putting the new gpu in. Now though I can't even get in to the bios as the monitor is not receiving any signal.

 

[freercurse]

hmm okay put your GPU back in. and just go through what happens.

 

[dct048]

hmm okay put your GPU back in. and just go through what happens.

Turns on and stays on now but still no monitor. All the fans come on so everything is powered.