F12 crash

[Nermin Celik]

Hi,
I installed Fedora 12 x86-64 onto Hp Z800 workstation, had a problem with
software updates so used
$su -c 'yum update',
problem was fixed. Installed Adobe Acrobat Reader. Downloaded few other
programs but did not install them. Then, the screen froze. Tried
Ctrl-Alt-Del to restart, didn't work, so reset the machine from the power
button. Then someting very interesting happened - machine went into a loop
mode, started, failed to boot fedora, shutdown, restarted by itself, failed
to boot fedora, shutdown...etc about six times. Then I just shut the machine
off. Before fedora could be loaded, the pc just shutdown in each case. At
start tried pressing F10 but didn't work.

Has anyone else experinced a similar problem?

Nermin
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