HT2037 Power Mac log on issues

Recently, I restarted it and went to log on. Upon inputting the correct password, the log on initiated. About halfway through the lon in, it now abruptly stops and reverts back to the log on dialog box. How do I correct this?

Hi Paul Barrick1-
RAM does go bad. Each successive release of mac OXS10.x tends to make a Mac "pickier" about RAM.
Did you try installing the RAM skipping the first pair of slots?
The hardware test does little except check to make sure RAM is present. This program, run at 20 or 30 iterations, will root out any problems: Rember
Luck-
-DP

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