Emachines motherboard assisting a retired vet with upgrading computer.Need image of T5082 MB

SOURCE: I have installed one 1gb

I'm assuming that your 2nd DIMM is the same type and speed as the 1st one you put in. If you are not sure, check and make sure that it is DDR2, 533MHz, PC4200.

If they are not the same, that is most likely the problem.

If both DIMM's are the same, remove them both and then put one of them back into DDR2 Slot 1. Start your computer and see if the computer recognizes the memory. Remove it and try the other DIMM in the same DDR2 Slot 1.

If both work OK, the problem is on your mainboard.

SOURCE: I have a eMachines T5082 and have attempted to

sorry, i re-read your post and saw that you are using 2 sticks,, if you have 4 slots for ram, insert one into the first slow, skip a slot and put the second stick in the 3rd slot, give it a try.

SOURCE: emachines t5082- i pulled out the 512 mb chip of

It should work outright, checked Emachines support page to see if there was an updated bios but sadly there is not. You can try inserting the two 1gb sticks and then clearing the cmos with the jumper on the motherboard. Let me know if that works.

SOURCE: Emachines T5082 Adding 512Mb ram. Getting slot 0 installed slot 1 not installed.

Try swapping the memory in the two slots. It sounds like either one of the memory chips is bad or one of the memory slots is bad.
If you find that one of the slots is bad, then you might try just putting a 1GB Chip in the slot that works.