Why does my Ubuntu freeze in the middle of something with a blank screen?

Posted by mohamed on Ask Ubuntu See other posts from Ask Ubuntu or by mohamed
Published on 2012-06-27T23:19:43Z Indexed on 2012/06/28 15:25 UTC
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12.04

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dell

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black-screen

I am facing a serious problem as my Dell Optiplex 745 loaded with Ubuntu 12.04 32bit freezes with a blank screen no mouse cursor no keyboard activity in many occasions.

Sometimes when I open firefox, or software center, I really can't tell what the main problem is, but what i am certain about is it i have to do a hard reset to reboot.

I tried to use a live-cd to boot but it did the same, tried the recovery console but couldn't find a way to fix from there (I am a new user) suspected a hardware problem but windows runs flawlessly so I believe its something related to ubuntu.

Specs:
Intel Celeron D 3.06 GHZ
3.0 GB ram
Intel built in graphics Q965
1 TB HDD
Bios Phoenex 2.6.4

Please help I really love ubuntu and I don't want to go back to windows!

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