Does your Dell XPS 410 just sit there with a solid green 3 & 4 and refuse to boot up? Mine does!
Have you tried the suggested Dell method of removing RAM to find the bad stick? I Have!
Does your computer, even with no RAM in it still indicate that same error code? Mine does!
Well good! For a limited time only, I have the solution to your problem! That's right, turn that paper weight into a super great! (Huh?)
Unplug it. Wait 30 seconds. Plug it back in. Try turning it on again. It should:
1. Boot up fine! (this means your RAM is A-OK, and that the error codes are just indicative of the fact that your computer is a piece of crap. Duh! You got a Dell!)
2. Error code again. (Take out a RAM stick and put a different one in and repeat the process of unplugging etc. till it boots up)
3. Error code different. If you hear beeps and just have a 1 showing, it means you took them all out and unplugged it and waited 30 seconds (or two minutes or longer) and then plugged it back in. That's what I finally did. It accomplished some sort of hard reboot or something and cleared it's memory or whatever. Torn it off, throw in some RAM (one stick if you don't mind), and plug her in and boot her up. Should work unless you threw in the bad RAM.
If all this fails it means that all your RAM went bad at once. If so, please comment so i can know there's someone out there more hated by their ocursed Dell minion than me!
So, again, the lesson here is that Dell sucks and no one should ever buy a Dell ever and that I hate Dell, and that I will never buy one again (and have put my money where my mouth is and although I have 10 Dells in my home, my most recent purchase was an HP).