Showing results for 
Search instead for 
Did you mean: 
The HP Calculator Community Message Board is moving. While we prepare for the move, we are unable to accept new postings. During the move, you can look for help from other users by visiting . Or if you need technical support for your calculator visit: HP Calculators. .
New member
1 0 0 0
Message 1 of 2
Flag Post

Prodesk 400 g1 sff not restarting

HP Recommended
Prodesk 400 g1
Microsoft Windows 10 (64-bit)

I saw other peoples with this problem and still unsolved. I think this is a general problem on 400 g1. Installed windows 10 64bit on 2 pc's and they have the same problem restarting from windows. Windows says "restarting", screen goes black, power led stays on, and that's IT. You have to press power button for a few second to shut down, then power on, again. The same thing happend during windows installation when it's automatically restarting. What can be done? I"ll try installing windows 10 in legacy mode, not uefi, like i did. 

Level 16
Level 16
34,049 30,024 3,091 7,101
Message 2 of 2
Flag Post
HP Recommended


From the specs I could find, this model already comes with Windows 10 64-bit installed.  So, WHY are you then forcing your own install?  You are creating your own problems by doing that because unless you are saving off the preloaded HP drivers (which I am guessing you are not doing), then when you force your own install, you are replacing working drivers with generic ones provided by Microsoft -- and that is asking for problems, which you are then getting.


As to the mode, modern PCs with Win10 preloaded come in UEFI mode by default; forcing a change of that to Legacy mode will not improve the situation unless you are then using Win10 boot media that will not handle UEFI mode.

***If my post helped, click the thumbs-up symbol to say thanks***

***Please mark Accept As Solution if my post solved your problem***

I am a volunteer and I do not work for, nor represent, HP
Was this reply helpful? Yes No
Warning Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation