Hi Dan, if you feel that you are confident enough to tackle the task of removing the GMA 4500MHD chip and replacing it with a new one, I have to tell you that that is not an easy task to perform.
The task can be made a lot easier if a heat gun is used that is designed for electronics repair.
I am posting a wikipedia on the GMA chip set series, focus on the GMA X4500 where it states the following quote The GMA 4500MHD for laptops was launched on July 16, 2008. Feature wise, the 4500MHD is identical to its desktop cousin, the X4500HDhttp://en.wikipedia.org/wiki/Intel_GMA
This X4500HD uses the G45 Chip set info at this link
NOTE: Copy and paste link belowhttp://en.wikipedia.org/wiki/G35_(chipset
Scroll down and look for G45
I have contacted my electronics parts suppliers and have found that the chips were NOT manufactured for distribution outside of Intel's inventory control and are not sold separately from the motherboards that they were embedded on.
If you can locate a motherboard from a laptop, that experienced a failure other then the on board graphics chip, which is built into the chip set chip, then chip replacement is possible, but not by any means an easy task to perform.
You have Three
possibilities for chip/ board damage here, one removing the old chip and not damaging any of the delicate circuit traces, two, removing the good chip from its former motherboard, and three, not ending up with solder bridges or bent pins on the chips leads once it has been melded to the new motherboard.
I wish I could have provided a resource for a brand new chip, however, Itel corp. has exclusive rights to that chip set and controls its distribution.
Edited by MrBruce1959, 24 November 2012 - 09:09 PM.