I tried reboot SL510 now it is stuck on a black screen what do i do

[hdtoad100]

I tried reboot SL510 now it is stuck on a black screen what do i do

 

[hang-the-9]

When you say "reboot" do you actually mean "re-image" or did a factory restore on?
And by "try" did it not do anything at all or did it complete then boot to a black screen? Is it really a fully black screen with nothing on it? Not even the BIOS screen shows up? Any background to the issue, why did you try what you tried in the first place?