Problem adding extra memory

[chrisc4290]

Our main office machine has 2gb of RAM in one slot and there are 3 spare slots, one white and 2 blue. It uses DDR2. So I have this other machine where the hard disk died with 2 x 1gb DDR2 in it. I put the 2 x DDR2 into the 2 blue spare slots. Now the machine will not even start up, no display!

Any ideas please?

[Swa]

You're using the 1GB sticks in dual channel mode but the 2GB stick in single channel. Not going to work.

[chrisc4290]

Aha!

Thanks