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- HP Community
- Desktops
- Desktop Video, Display and Touch
- Z400 workstation (monitor) issue

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12-19-2021 10:37 AM
So, I got from my cousin HP Z400 workstation, beacuse he wanted rid of it, so I said: I can take it home and try to get it back alive.
Well, I tested computer on my cousin's old monitor. It said: you have to press any button on keyboard on order to reboot computer.
But my cousin didn't have keyboard at home.
What a sad momment.
So, I brought Z400 home and started figuring out, how I get this thing working.
I went straight to the store, to check, was there any Dp-Hdmi cables. There was. And one thing more: keyboard.
I found cable and keyboard. I paid for cable and keyboard 30€ (Pretty cheap) and went back to home. For next Day, I started working with Z400, there is inside: 475W power supply, Hitachi hard drive and Nvidia quadro 2000 + many other stuff (motherboard, CPU etc.).
I asked my little brother to borrow me his Samsung odyssey G5 monitor, which I plugged into Z400 Workstation.
So, here we are, at the road Block.
Z400 is so old, that Odyssey G5 probably dosen't recognizable Z400.
Odyssey G5 just says: Device not recognized.
And that's it.
I press power button (on Z400), button become blue.
But screen is just Black. I put screen on and it says: Device not recognized, and it just goes in standby mode.
Any ideas why Z400 dosen't work?
I'd be happy if anyone could solve it 😄.
Thankfully, Niksu
12-19-2021 04:57 PM
@Niksu -- I can take it home and try to get it back alive.
You have to press any button on keyboard on order to reboot computer.
Hitachi hard drive.
Device not recognized.
That "press any button" message is an indication that the motherboard could not load Windows from the Hitachi disk-drive, which implies a failing disk-drive.
So, you probably need to replace the disk-drive, and then reinstall Windows.
If the computer was running Windows 10, it is not difficult to reinstall Windows.
If the computer was running Windows XP or Vista or 7 or 8, you'll need to find the Installation Media (probably one DVD) to reinstall Windows.
12-20-2021 01:23 PM
@Niksu -- Z400 works normally (like normal desktop), but monitor stays Black. So I cannot do anything.
You can try a few things.
Are you indicating that powering-on the computer seems normal (lamps on the keyboard & mouse & the "power" lamp and the "disk-drive activity" lamp on the front of the case) seem to indicate a normal start-up?
If so, then try:
1. change the monitor, and restart your computer;
2. if your smart-TV has VGA or HDMI input, connect your computer to that socket, and restart your computer;
3. open the computer's case, and either replace the current add-in video-card, or insert a new video-card, and connect your monitor to the video-output ports on the new video-card, and restart your computer.
Do any of these attempts produce anything visable?
12-22-2021 01:52 AM
@Niksu -- NVM
What do you mean?
1. How to install Node Version Manager (NVM) for Windows 10? - DEV Community
2. NeVerMind ?
3. Something else?