Wont connect online was on earlier no problems got back home started up wierd messege pops up about erasing harddrive with a precent bar then goes away and system starts over and proceeds normal. i got to log in on psn in it says DNAS error occured. Well i do have internet and its running fine, my internet is wired not wi-fi and as i am online on my computer idk...tryed returning the ps3 to factory did it and when it did the connection test it went fine but once again when i try to log on PSN its says error.

Sounds like there is an error with the current firmware you have installed. you might have to go into recovery mode. to do so press and hold down the power button for about a minute and your blue light will start flashing and the recovery screen will appear. follow the prompts and it should work. keep in mind this is last resort and might format your HDD hard drive. you can also try going into your settings and scroll all the way up to were it says update console/ system and just update it. i know if you canceled a firmware update in the past it will create a problem were it will not function correctly because its not getting enough system packets from the update or it has missing packets when it did update. either way just update it and see if that fixes it, it will not erase the hard drive by updating it.

Try setting up a new account on psn it seems like the system is trying to log you on with incorrect login details