Grand Theft Auto Vice City Freezes and computer crashes

[unknown2u]

Hey I've been playing GTA Vice City for a while on my PC and after a certain amount of time which seems to be random, it freezes and i have to reset my computer.

I searched and tried EVERYTHING on the internet and nothing helped.

My PC Specs:

OS: Windows XP SP3
Processor: Intel Core 2 Duo E6750 2.66GHz
RAM: 2048MB RAM
Graphics Card: NVIDIA GeForce 8800 GTS 640MB
Sound Card: Realtek HD Audio Output

Here are all the things I tried to solve the problem according to what I read on the internet:
- Compatibility Mode: Windows 98/ME
- Deleted gta_vc.set
- Deleted all MP3 music files I put in the folder
- Changed Hardware Sound Acceleration Level
- Replaced gta_vc.exe with another one
- Reinstalled the game
- I have no RAM or Overheating problems since I played games that are 10 times better and heavier than GTA:VC and I never had this problem so it's obviously the game.
- I already defragmented my PC a while ago

I read that the problem might be with the sound but i took care of anything that can be related so it appears it's not..
All my drivers are up to date.

Any ideas anyone? Please...

Thanks in advance

 

[unknown2u]

I've discovered exactly what causes the crash.

I am doing the ambulance mission and when i turn the siren on the game crashes immediately.

Sometimes it takes some time before it crashes.

Any ideas???

 

[unknown2u]

Ok it crashes even without the sirens.. no idea why...

Anyone??