well iv read loads of your poasts and it looks like these units are a naff idea?

well i have 3!,got them off a local company who do insurense jobs and thay wrote them off(well thats a suprise!),manadged to get one going ok and sold it!,got 2 left,same type fault no display!,cant get a mini vga adaptor lead so i striped the mb out and on the underside guess what theres a pci socket! the tv card is pluged into it so i replaced it with a pci graphics card and pluged a external monitor in and wow i have a post,great so i thinks!,soon as i push f10 to go into the bios blank screen!,pc didnt come with hd as there removed for data protection,so me think install windows and it should find the drivers?!wrong!,it boots from cd copys files ready to install and wammy the screen goes blank! ,so after plenty of splinters me thinks windows is pritty good at recovering,so i put the hd in another pc install windows then put the hd back in the hp boot up and get the boot menu ,boot  in safe mode and starts to boot and wham blank screen!!any ideas??,assuming the on board graphics is still ok and i cant get a mini vga adaptor?,does anyone know the pin conections on the plug marked vga 1 or 2 which the fly lead joining the mb to the rear mini vga socket?,as i presume this is a normal vga op? and i could chop the lead and put a normal vga socket on it?,or if not is there a way of testing the wires to find out what wire does what?.

getting good at takeing these apart!,havent taken the screen apart yet!,but will!.