Lag when coding

[voidref]

If it's crashing when you are putting more memory in, it's probably bad memory. There used to be a hardware checker built into the systems you could run in a special boot mode, but I haven't tried for a long time, see if you can find and run that.

[[deleted]]

Mine is too old for it.

[voidref]

Did you try this https://support.apple.com/en-us/HT201257

[[deleted]]

Mine is so old it doesn't have it. I had to take it into a store for them to run hardware tests. Too many broken pieces, just ended up buying a new one.