hi guy im realy loosing my head iv got a dell dimension 8300 pc thats gone crazy iv try all i could with it change ram,psu,graphics card still noting. the problem is that it wont boot up most of the times. everythings power up cpu fan,hd,cdriver power led but the diagnostic led at the back doesnt light up at all wich i read on dell site that it mean pre bios failer what ever that is.but when it boot up it will work fine without a problem you can even restart it no problem but as soon as you shut down youll be lucky to have it back on again pls help
