moniter in power saving mode

[undertaleisbae101]

So my PC was booting properly and I could get on it and do everything fine. A few days ago the moniter started going into power saving mode when I turned it on in the morning. It was working the day before and I left my PC on the whole night to download games. Now my PC does not even show a display on the moniter. When I do unplug the monitor though it says no connection. When I plug it in it says power saving mode. The monitor is 3-4 years old and is plugged into an nvidia gtx 1050 ti using a dvi cable. The monitor is a lenovo (not sure what make). If you need any more info just ask. Any help is appreciated!

 

[jay32267]

The easiest and quickest way to find out what's going on is to try another monitor.

 

[undertaleisbae101]

I tried a new monitor and that is not working either, I may try a new cord

 

[jay32267]

That is something to try...but being your "no connection" message goes away when you plug in the signal cable...that means it's at least doing "something".

So let me get this straight....when you power up...you now get nothing on the monitor at all?

Do you have a video card? or are you using integrated graphics?

 

[undertaleisbae101]

So its not with the monitor I checked with another PC. I got a displayport to dvi and it turned on twice. The reason I say twice is because I bumped my power cable and shut it off. It is very touchy. This got me thinking that my GPU may not be getting enough power. I only have a 400 watt PSU. It is also around 5 years old. I'm thinking this may be the problem but possibly not.
My GPU is not integrated it is a card. Gtx 1050 ti. ( not sure if I mentioned that)

 

[jay32267]

400 watts is very marginal for that card

 

[undertaleisbae101]

Marginal as in too little, or just enough? If its not the PSU I'm probably going to take it somewhere not sure what else to try.

 

[jay32267]

It's very near to "on the line" which means that any little deviation will cause you to be below the line and will cause problems.

 

[undertaleisbae101]

I've been looking at some stuff today and I am going to try a 600 watt PSU

 

[jay32267]

I think that should be fine.