COLGeek :
LGA = Land Grid Array
http://en.wikipedia.org/wiki/Land_Grid_Array
Description
The land grid array is a packaging technology with a square grid of contacts on the underside of a package. The contacts are to be connected to a grid of contacts on the PCB. Not all rows and columns of the grid need to be used. The contacts can either be made by using an LGA socket, or by using solder paste.
LGA packaging is related to ball grid array (BGA) and pin grid array (PGA) packaging. Unlike pin grid arrays, land grid array packages are designed to fit both in a socket or be soldered down using surface mount technology. PGA packages cannot be soldered down using surface mount technology. In contrast with a BGA, land grid array packages in non socketed configurations have no balls and use a flat contact which is soldered directly to the PCB and BGA packages have balls as their contacts in between the IC and the PCBs
I think I was misunderstood in relation to LGA.
What I meant is this - mounting holes size. Back to Inspirons. Inspiron included LGA775, and AM2 to AM3 (for AMD processors), latest Inspiron 660 has LGA1155 socket, but still uses LGA775 mounting size holes. I am not saying anything about socket itself, but about size between mounting holes, you can not use anything like CM EVO because motherboard back plate has to be removed in this case, or a lot of improvisation would be needed.
This is the type of cooler needed in this situation
http://www.redplanettrading.com/Dell-P281K-Fan-Heatsink-Assembly-XPS-435-9000-Systems-CPU-Shroud.html
Now OP might need aftermarket, similar type and exact size (distance between screws).
This can be the one if LGA1166 is the correct mounting size (again not motherboard socket, but a backplate size)
Noctua NH-U9DX 1366 Dual Heat-pipe SSO Bearing Quiet CPU Cooler
http://www.newegg.com/Product/Product.aspx?Item=N82E16835608021
Or similar with screws already attached to the cooler.
I hope I made myself more clear now.
Hey, so Im getting freezes and BSODs now. Do you mind me posting it so you guys can have a look?
And how do I post it?
Can you post BSOD error message - very long string of numbers, this might help.
In order to post pictures you have to get an account at image hosting site, I am using imageshack for an example.
Your turn now.