The worst thing happened on my MacBook Pro so far(Mac OS X 10.5.5 update)

Yesterday, i have updated my computer to the 10.5.5 . The download went smoothly. However, there are some fallbacks about this version. This version have caused me many nightmares to me. After installing this update, it requires a restart. So i go ahead with the restart. When i restarted the computer, it was shocked and i was stunt when i see this error. "No bootable device -- insert boot disk and press any key." . This is the worst scenario happened on my MacBook Pro so far. I cant even start my computer and it kept restarting. This is horrible!

Then i switched the computer off as it does not response to any key when i have inserted a Mac installation Disc 1. Therefore, i have decided to archive my computer. This caused my mac os x to be downgraded to 10.5.2 which is the original version for my MacBook Pro. Well... the installation took a blistering 2 hours of my life! 

After the 2 hours of the archive, the start-up when smoothy. Somehow many of my software like Final Cut Pro, Aperture, iTunes, QuickTime and many other softwares cannot be run properly. This means i have to reinstall all these important software that i need to take all the trouble of downloading the software again. The worst part are my bluetooth of my MacBook Pro having problems connecting to all devices including my older Macbook Black and the VRAM failure (which means my NVIDIA Geforce 8600m GT aren't working properly). I really need to send my laptop for service this time but they aren't doing anything as i have already report these problems to them.

I really hope that Apple can resolve these update problems as i am not the only one having these problems and i need to pair my devices like my mobile phones to my computer to transfer data wirelessly. This is a big disappointment as my older MacBook which is running on Mac OS X 10.4 doesn't have any problems! What is the use of the bluetooth where i cant even use it! heck.... please solve these problems as soon as possible! I have wasted too much time for solving this particular problem which is not my fault. Frustrated!