Thanks for the reply mate I really appreciate it!
I also thought that the hdd may cause the issues but It's reported as a working one in the hdd compatibility list. The one I'm going to try is a 80GB Western Digital WD800 - I'm on my way to Mr.Bricolage to buy a T7 torx to move the psu connector as it's not plug and play for the WD hdds than I'll post what happend.
And finally, after checking the sticker (and inside the case after following a tut from the net) from the back of my fatty I'm 100% sure it's a 30004R / V5 :)
I've tried yesterday with HDL .08b and .07c but it freezes again just like with .08c

