I have an early 2008 MacBook Pro with 2gb of memory--one gb in each slot. 4 gb possible total.
I recently ordered an upgrade of 2 - 2gb modules but when I installed them my computer would not start up. I tried re-installing and switching slots to no avail. I discovered that I could start up with one 2gb module in the lower slot only and also with one 2gb module in the lower slot and one 1gb module in the top slot (total 3gb) but in no case will it start with two 2gb modules.
I called product support where I purchased the memory and they had me reset the pram which did not solve the problem. They sent me 2 new 2gb modules which don't work either.
The problem appears to be with my computer. What and why?
I recently ordered an upgrade of 2 - 2gb modules but when I installed them my computer would not start up. I tried re-installing and switching slots to no avail. I discovered that I could start up with one 2gb module in the lower slot only and also with one 2gb module in the lower slot and one 1gb module in the top slot (total 3gb) but in no case will it start with two 2gb modules.
I called product support where I purchased the memory and they had me reset the pram which did not solve the problem. They sent me 2 new 2gb modules which don't work either.
The problem appears to be with my computer. What and why?