Question Monitor gets no signal

[Ziggatronn]

I recently moved and got rid of my desktop monitor for a slightly used insignia tv/monitor. I know this insignia monitor works because I've been using it as a second screen (hdmi) with my laptop.
From my desktop to my original monitor, I connected using a DVI adapter to VGA, and it always worked great.
I am not sure if the VGA plug in the insignia monitor works.

Basically what happens is whenever I power on my desktop, "no signal" shows on the monitor, hdmi or vga. I tried hdmi on my tv (vizio). No display. No computer logo, no windows logo, nothing. If I turn on pc THEN tv, it tries, "retrieving data..." But still "no signal" after.
I know all my hdmi cables work. I tried them with my laptop with all the screens.
After some internet research, I popped the little cmos battery and the ram sticks out, cleaned with contact cleaner both port and plug, let dry, and reseated (resat?). I turned on pc then tv and suddenly it worked! It showed my options F1 for start up, I think or F2 to enter bios. I entered bios to fix date and time, then saved and exit. So I connected it with an hdmi splitter and connected to both tv and insignia monitor. It also worked! Huzzah! I updated windows (it's been a few months) using only insignia monitor. The pc restarted during the process at least once or twice. Then I turned it off for the night. A few days later, no signal all over again. But this time nothing works.
I've unplugged everything I could, cleaned and reseated. Plugged everything in/turned on in different orders. Switched the ram ports, and tried one at a time (though not in all ports). Still nothing. And I can't seem to get into bios or safe mode or anything blind because my keyboard doesn't seem to be responding (lighting up) either.
I would try using the integrated video on the motherboard, but while I have a db9 cable, I don't have anything to plug it into.

Mobo: msi 970A-G46 MS-7693 get 2.0
Gpu: evga geforce gtx 750 ti sc
Ram: ddr3-1600 cl9-9-9-24 1.5v pc3-12800 4Gx2
Cpu: AMD, I'm sure but I really can't remember off the top of my head
Monitor: insignia NS-24E200NA14

Could this have happened because of a windows update? Hopefully I don't need to replace the video card or motherboard.

 

[popatim]

to me this sounds like the motherbd is dying.

When you start the PC and get no signal to the tv/monitor - Do you hear the Windows Startup sound at all?

 

[Ziggatronn]

to me this sounds like the motherbd is dying.

When you start the PC and get no signal to the tv/monitor - Do you hear the Windows Startup sound at all?

I had my tower running for about twenty minutes (doing nothing because of frustration), then turned it off and plugged in my speakers to test your query, and now all displays work again. I literally did nothing new, and it seems to have worked itself out. I even turned it off for a few minutes and turned it back on and it seems to be doing fine still.

Thanks for your help. Hopefully everything will continue working from now on. It's been a frustrating few weeks.

 

[popatim]

Now I wonder if you have an electrical ground issue... LOL

 

[Ziggatronn]

Now I wonder if you have an electrical ground issue... LOL

It may be. I turned my computer on again today and AGAIN no signal.
How can I check if there's a grounding issue? Everything is plugged into a power strip.

Also, regarding your first post, the speakers work fine, but when I got my computer running yesterday I didn't hear the windows startup jingle.