If I have bad memory/memory controller, I should see errors soon, right?

[InorganicMatter]

Running memtest, nothing overclocked, never has been overclocked. Windows will crash, and when it reboots says there was a memory error. I know this could just be a cause of non-ECC memory, but it has happened like 3 times in one week. I pulled the memory, stuck it in another computer, and am running memtest in the computer now. I should see some errors within the first run if it is bad memory, correct? If not, I should run memtest on the possibly defective motherboard correct? Again, I should see errors quickly if it is a defective product correct?

All machines are running a 915G chipset motherboard, P4 530J, and 1GB of Corsair Value Select.

 

[S1nF1xx]

How long are you running memtest for? You should run it overnight for best results. If you get any errors the RAM is bad.

 

[InorganicMatter]

How long are you running memtest for? You should run it overnight for best results. If you get any errors the RAM is bad.

Currently at 33 mins, and counting.