[SOLVED] I don’t know if it’s my monitor or computer

Nov 14, 2019
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I’m not sure if I’m on the right thread and if I’m not please suggest where to ask but my computer is a custom made desktop that’s only a year old, but I just updated my computer when I tried to turn it on again the LED lights and the fan was going but the display wouldnt show up. The monitor works and it turned on fine but it kept switching from hdmi to analog and I’m not even sure if it’s the monitor because my keyboard isn’t on, when I use it and I can tell that it’s not on because when I press a button like caps lock it doesn’t turn a light on like it usually does and I just need to know if anyone can help with this.
 
Solution
Does it give you any beeps?

I would try holding the power button down for 30 seconds....
I would reseat the RAM.
If this doesn't work.
I might replace the CMOS battery.
I might update the BIOS.