sorry it may seem as a stupid question but its my first time with the red hat

i have windows xp he already installed
nvidia geforce fx 5200
amd athlon xp 2800+

when i install it through graphical mode it keeps saying probing; then another blue screen apears wich also says probing then it says that its going to reboot then the screen turns black

????

so i install it in text mode nd every thing goes fine, the installation finishes, i log in then i find FATAL SERVER ERROR: No screens found

????

so does any one have an idea about that

thnxs

Do cat /var/log/XFree86.0.log (numeric 0) | more . This should tell you more precisely what the problem is. If you cannot figure out the error let us know and we'll try and help. Likely to be refresh rates.