No Signal

[AxillaryPower]

I recently moved my PC and now that I'm trying to reconnect everything, my HP25vx monitor is not receiving an HDMI signal from my PC. It has power, and is connected, just when I boot up the PC, the monitor doesn't respond. When I turn on the monitor, it cycles through DVI, HDMI (where it lingers for a second longer) and VGA, but doesn't find anything and goes to sleep mode. I know it's not the HDMI cable because I had a new one to test. 

The model number is M6V68AA #ABA

[Prométhée]

Hello

[start]
This is an automatic response
in order to avoid writing the same thing each time

Some elements may therefore not apply to you 
To be able to answer you effectively, we need some information

we need the exact model of your computer, and the product number
To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support
and for a laptop
HP Notebook PCs - How Do I Find My Product Name or Number? | HP® Customer Support

Give the full name with the product number P / N

this is not a model:
HP Desktop M01-F1xxx
the requested product number must look like this
Product Number: 9EE50AA # ABA
the model corresponding to this number will therefore be
HP Desktop - M01-F1033wb

Give the full version of windows

for windows 10 type winver in the search box
if you give the best information
your problem could have a solution more quickly (depending on the difficulty, of course)
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[AxillaryPower · Accepted solution]

Ok, I got it to work by unplugging everything, monitor and PC, and plugging it all in again. I still don't know why, or what I'd have to do in the future to prevent this from happening again. Does the order that things get plugging in matter?