Dell PowerEdge 2850 Blank Screen on FC5

[powereds]

Hi all. I've been struggling these past few nights to configure the vncserver on a Dell test server. I managed to spend 3-4 hours every night trying to configure vncserver on FC5 so i can manage it from my notebook.

After installing FC5 on the server and following some guides here and outside this forum, i restarted my server. Now i got this problem, FC5 won't proceed to the login gui. After displaying
'Starting first-time boot configuration', it must display the mouse pointer and the login gui asking the username and eventually the password but i will always go on 'blank screen' and the system will freeze. I have to manually shutdown/restart the server to try again. I'm on my 7th restart now and hoping i will successfully boot.

Now my question is, why is this happening? What should i do? Tweak something? Where? xorg.conf?
I very badly need your help to solve this problem. I hope you can help me with this.
Thank you very much in advance.

By the way, below is the server specification.

Intel® Xeon™ Processor at 3.2GHz/2MB Cache, 800MHz FSB, EM64T
4GB DDR2 400MHz
36GB + 146GB 10K RPM Ultra 320 SCSI Hard Drive
LSI Logic SCSI Controller
No RAID, Split Backplane
Embedded ATI Radeon 7000M 16MB SDRAM

Regards,

[powereds]

At last, after the restart the login showed.
I dont know why is this happening. I think this is hardware related problem, the ATI Radeon video i guess.
So i have to hardware restart my server 7x or more to be able to login.

I really your need help and i have to do some research on this.
Thanks in advance.

[powereds]

Just figured out that the ATI Radeon is the "culprit".
So, i booted to runlevel 3 and changed the Driver "radeon" to "vesa" on the "Device" section of xorg.conf [/etc/sysconfig/].

You can refer here for the details.

Thanks.