hey about a week or so ago i upgraded my mainboard and CPU and reformatted my hard drive now up untill then my LW basic has worked fine but now it like fully reboots the whole computer which isn't normal. the start up window apears its just as soon as the main window is about to apear it goes mental i'v tryed everything, the latest java and all kinds of updates i could find but nothing seem to work... any ideas?

hmm when those type of things happen it sounds like a hardware compatibility issue. LW is simply the catalyst that sets it off but not the cause. See Limewire and Blue Screen of Death (click on link). But if there's no BSD, then it may be an over-heating issue. Your fan may need upgrading also to cater for the higher capacity CPU & drives. Also check heat-sinks. You did remember to put them back in right lol