I am running Ubuntu 12.04 64 bit on an Optiplex 745 core2duo dual 2.3 GHz with 4 gigs installed plus an ATI Radeon 5450 1 gig video card for several months now, no problems at all.
My dell 5150 windows7 laptop rejected the wireless mouse, long story short virus. Thought it might be a downloaded movie disc (which I burned on the linux machine) so to eliminate it, I thought I would download komodo for linux, update and pop in the disc and run komodo to see if it was the disc.
Came back from store and machine shut off. Started it up, came up to background screen saver, but would not load (very similar problem on windows machine) it gave three buzzes/beeps and went black screen.
Had difficulty getting disc out, but succeeded. Now when powering up, all I get is the three beeps/buzzes and black screen. Took side panel off and a little yellow light labeled
secondary power located next to the old floppy drive cable connection spot is on...... that's all folks!
Any suggestions as to what might have happened or what steps to take please? Sincerely, buzzed in Fla....