So no display at boot with card installed both seen from the video card as well as from integrated. I would assume that the power supply for this computer can not handle the load of this video card and so it is not booting properly as a result of. I'd install a 650 watt power supply if the computer case can take such an upgrade due to dimension conflict of power supply size in relation to the case, and then I feel your problem would be solved.
Sometimes you have to either modify the case to accept a universal power supply or move the guts to a new universal tower that is not in conflict of dimensional relations between power supply and the computer case.
I havent had to upgrade a Lenovo yet, but I had to on a Compaq Presario and I ended up having to drill out universal mounting holes to install a larger wattage power supply which while it fit, HP/Compaq decided to have their own unique 4 mounting screw arrangement and I had to make a stencil of the universal supply and then remove the motherboard and drill 3 of the 4 holes that were missing to make it universal, and then blow out the metal filings and then reinstall the motherboard. Then all was well. Most people take the easier route of installing the guts into a new case, but I like to save money and am good to alterations and fabrications ( mods ). Since then this 2004 case has also been upgraded to universal wiring connections for the PWR SW, RST SW, HD LED, PWR LED etc so its now running a modern quadcore in a Biostar motherboard in this case that use to house a Athlon XP 2800+. Looking at this computer it looks like an old 2004 Compaq, but its guts are modern. Currently working on making an IBM 5150 which use to be an 8088XT look all orginal but modern guts inside. That is lots of metal work and electrical work well beyond what many would take on.
Edited by goldfist, 28 December 2013 - 07:13 PM.