ubuntu 14.04 no corect boot lo graphic mode

What video chip do you use?
Does the system have a make and model?
Is the system fully updated?

How can anyone possibly advise when you give zero details.....we can't see your system.

lenovo g400 ram 4 gb processor Intel® Core™ i5-3230M CPU @ 2.60GHz × 4 graphicI intetel® Ivybridge Mobile os tipe 64 bit you are perfectly right saing what you say but i am learning just abandon Windows sorry

Has it ever been ok or has this come about after some updates?

 i really do not understand because sometime the low graphic mode is after fresh install sometime (mostly) after fresh install is ok and the first update create the problem
sorry for the time passed without answering but i post the question in so many places and stupidly i am bearably able to keep up

i am really very happy and also a bit discourage by my incapacity and the time that i rob from anybody who looked and gave attention to the topic i post. the problem of my computer was a graphic problem and was cause (i hope) by wrong setting at bios level in the bios there is a graphic choice between SWITCHABLE and UMA, mine was by Lenovo wrongly settled on SWITCHABLE instead the correct setting for ubuntu appear to be UMA.
i have to say that with Windows the setting SWITCHABLE was working properly
I hope the time I robbed to anybody was looking at my post is pardon and may be the fortunate solution could help somebody

as it appear to be a lait motiv i have to make a pass back and say that nothing is solved because i find out that setting the bios on UMA you exclude the graphic card and instead SWITHCABLE is the opportune setting so sorry but nothing appen

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