What's causing backlight issue on startup after upgrading RAM?
A week or two ago I upgraded the RAM to 6GB as suggested here on ifix it with parts bought here.
Then since last Sunday the backlight will not work after waking from sleep mode or startup unless I go back and forth with the F1 and F2 keys for a couple minutes. After the backlight goes on it stays on just fine.
I tried reseting the PRAM and re-installing the RAM.
I'm hoping to fix this without buying any new hardware.
I took out the 4 GB and put back in one of the original 1 GB RAM and the problem continued. Then I took out the 2 GB and replaced that one too with the other original 1 GB RAM. The computer backlight works just fine now. Is it possible that the 2GB RAM card that I bought has a problem?
I check the firmware and it is up to date.
Then I tried each slot with each stick individually. All times the RAM was recognized but the problem continued except if the 4GB was on the left and the 2GB was on the right. So I tried them together in those positions and it seems to be okay. I'm going to observe this combination for a while to make sure it isn't a fluke.
Still having issues. Only at startup except for when I plugged in my vampire of an external hard drive. My serial number is W89374679GU. I might try switching back to the original two RAM cards and see if the problem continues.
Thank you guys for your help!
Is this a good question?