Installation Problem

[midnightClub543]

I have bf2 patched to 1.5 and I installed the PR and the intallation went fine, but when starting it up it just shows the splash screen and stays there frozen, it does not load and its just not responding, is there any way to fix this? I really want to play PR

[maarit]

run as admin?
and start BF2 once before playing PR.