Originally Posted by 'Jafula',index.php?page=Thread&postID=186955#post1 86955
Looks like a graphics card with dodgy ram to me...
You might need some professional help with that; I'd say one of your hardware components is a dud. If you just got the lockup and stuttering sound without the weird pattern on the monitor I would probably say that you had ram timing issues (usually solved by motherboard bios updates or getting compatible ram). But since you also have the weird pattern on the monitor I'd say graphics card is not working too well.
I hate diagnosing these things as it is so hard to tell what has actually gone wrong and guessimates by random people like me are no where near as useful as they should be!
Hope you get it sorted soon!