Hello everyone! so I am currently in Europe and I had my desktop computer mailed to me from the USA. When I try to boot it
it up, nothing is displayed on the monitor besides "no signal". I thought maybe the HDMI cable was loose but it was not.
I thought that maybe the graphics card was not seated well but it was seated in all the way. I then tried using a VGA cable
to see if I could see anything on the monitor but still no luck. I tried reseating the RAM and all the plugs/connections and
no luck still. Then I tried to to reset the motherboard CMOS by taking out the battery and still no luck. I connected my laptop
to my monitor so I know the monitor is working.

Now, based on all the troubleshoot videos I have seen, there are three things that can be the problem. I will order them from least likely to most likely, here we go.

1. I still have not tried booting the desktop without the graphics card installed, but somthing tells me that this is not the issue.

2. there is hardware damage due to the mistreatment of my desktop on its trip from the USA to Europe.

3. the desktop is not getting enough power to boot, only enough to turn the fans on, etc.

I say this because I am using a European to American power adapter. the adapter I am using is a "type C" adapter, and
on it, it has written "10A max 250V~"

my desktop is an HP compaq from 2015 and on the power supply it reads "AC input 100-240 V-/4 A,50-60 Hz" then "DC output
shall not exceed 240 W"

and on the actual power cord to the power suppy reads "10A 125V"

I bought a new European powercord but it reads " 10A 250V" can I still use it?

What do you guys think is going on?

*one important thing I should note is that my desktop SEEMS to take a little longer to start up than usual and it is working harder and louder than ususal but no bleeping noises or anything coming form it*
Hi
You can use the new European power cord without the voltage converter. The if the computer has "AC input 100-240 V-/4 A,50-60 Hz" it is universal world wide and auto switches for correct line voltage.

Please check the monitor is plugged into the graphics card not the motherboard. If you want to test you could remove the graphics card and use the onboard graphics. Just as a test.

If the drive is taking longer to boot it MAY have been damaged in transit so when you have the computer displaying you can go into the bios which you will need to do to reset the date and time.

If you are in the setup and there is a "test hard drive" available then run that to test the hard drive.

thank you for responding lisa. I have tried plugging the VGA to the motherboard without the graphics card installed and I have also tried using the HDMI cable with the graphics card installed and still no luck. I can't see anything on the screen at all, no BIOS and no setup, NOTHING! I may need to buy a new comuter now. I did perform a factory reset before packing the computer, but that should not be the issue right?The factory reset shouldn't have caused this problem. Have you tried a new cmos battery, normally a CR2032 battery. Or if you have a Multimeter to test the battery voltage it needs to be over 3 V Can you CONFIRM there is no voltage switch on the Power supply? I'm sure you would have seen it when looking for the label, but never hurts to confirm. I imagine powering up a PSU on 240V when it is SET (if it has a switch) to 120 could very well cause damage to the PSU.So I just took the computer to the repair shop and all they did was reinstall windows and now it works . and there is definitely no switch on the power supply. some other guys told me that my power supply can handle the new power cord as it will acutomatically ocnvert the voltage. thank you all for your replies!!I have no idea what the problem is/was, but I can ASSURE you that reinstalling Windows has absolutely nothing to do with the "No Signal" message you were getting at boot. That message is displayed long before bootloader even tries to load the OS. Having said that, I'm glad your system is operating properly now.