The symptoms you mentioned above point clearly to a graphic card problem but we should not make a rash decision first. There are still some steps you can try. Do you still have the installation disk, if yes, insert the disk into your macbook pro and hold down the c button. See whether you can start up?
Hold down F2 when you start up to see whether you can do a hardware test. If you use an intel macbook, hold down D when you boot up.
Have you installed any new softwares or change your hardware parts recently?
Edit:
Sorry i did not know your install disc were in the UK. Welcome to Singapore buddy, I am a Singaporean here. Singapore do have Apple Store. Go to the websites and check to see their locations. By the way what is your macbook version?
jingda
Industrious Poster
4,698 posts since Mar 2011
Reputation Points: 182
Solved Threads: 142
Oh yea, that's a kernel panic. One of the more elusive problems to resolve. You do not mention what plugin you were using to watch your video. Best bet would be to use you install disk and start up from there, but considering that you have not responded, you cannot find them. Don't panic, at least, not yet.
Try starting up your system holding down the F key on startup. This will shutoff all third party extensions. This is what usually causes kernel panics beside someone mucking around with the system files. Should the system come up ok, it is time to uninstall any third party extensions that you have installed. Whatever software you were using to watch that video is a good place to start. In some cases it might not need to be taken off of your system, but upgraded to the newest level. Go to their website and download their newest package ands install it. Reboot in the normal fashion and see if it works.
It truly is a hit and miss procedure and it is a matter keep on trying. You state that your machine is 4 years old so it probably came with Leopard and possibably you have upgraded to Snow Leopard. If you haven't so, I strongly recommend it. The disks were $30 and you probably can find one cheaper. This time put it in a safe place that you would remember because you never know when you will need it!
macmad
Junior Poster in Training
55 posts since Jul 2008
Reputation Points: 65
Solved Threads: 6
@ macmad
In case you have not seen this . The original poster seems to get the answers he needed already. But nice answer you have given. It is even better than posters in the mac-forums website:D
jingda
Industrious Poster
4,698 posts since Mar 2011
Reputation Points: 182
Solved Threads: 142