No Boot after adding memory

I have been running stable with my 2-512mb corsair...I came upon another gig of the same exact ram and thought that it would be cool to install it (all 4 dimms) and see how benchmarks would improve. Bad idea.
First, I removed my 2 sticks of tested and working ram, stuck in the new (brand new) sticks of the same make/manufacturer and ran memtest to make sure it was good...memtest ran for 30 minutes with no errors. So...I stuck all 4 sticks of this ram into all 4 slots and turned on the computer...nothing. all I got was the DBracket with the green light in the #2 hole, and red lights in 1,3,4. That signifies Mem Detection, hanging means module bad or installed improperly. SO I refitted the RAM...and tried again...same problem. SO, I give up easily and attempt to go back to my good old 2 sticks of Corsair VS in slots 1and2 where they had always been(the slots nearer the cpu..incase those numbers are wrong).
I tried to boot and the same thing...hanging on the Dbracket, #2 red, 1-3-4 green....So I reset the CMOS according to all proper methods (unplug, press on to discharge, move jumper, wait a few seconds, and move it back to 1-2). Boot it up and nothing, same hang. So, I figured, maybe I had the wrong 2 sticks of ram (since all 4 are identical) and I tried the other 2 pieces in slots 1 and 2. Same hanging Dbracket message. Now I am worried.
So next is to try the ram in the DIMM slots 3 and 4...tried both sticks in pairs and the same problem...now I am really worried. So, I reset CMOS again and tried 1 stick at a time in slot 1 (the closest to the CPU). The first time I tried this I got to post and I configured the BIOS to the way that It had been for the past 2 weeks. Then I let it boot to windows successfully and shut it down to install the 2nd stick of ram....I installed the 2nd stick and rebooted, and THE BIOS DIDNT POST...it just ran straight into windows without posting. So I imagined that maybe I should re-seat the ram and try again....same thing...straight to windows without post. This was no good because I cant adjust settings, so I reset the CMOS jumper yet again and rebooted. Now I am back to hanging on the Dbracket on the #2 red, and 1,3,4 green...I cant get to windows.
I cant believe this (or can I?!). What have I done? I cant imagine I ruined anything by putting in the 4 sticks of DDR (afterwards I saw a recent post and read the manual saying NO to double sided ram)...The posts didnt say it would kill my motherboard...I dont need 2 gigs of DDR ram...I really dont care about getting it to work with 2 gigs at DDR400..I DONT WANT THAT AT ALL! All I want is to get the 2 sticks to post to BIOS and let me back into my computer.
Does anybody know what is going on ... I just spent 2 hours changing sticks of ram and clearing BIOS...What is it that happened?
Please
M

Well, I'll tell you one thing. It's impossible to startup windows without posting. So if you got up to windows, your computer DID post.
Remember that the default BIOS setting is to show the pretty logo, instead of the textual information we old users like.
Also, sometimes bios may get thru faster than what the monitor can set the screen size and refresh rate. Resulting in seeing black, as the monitor tries to sync. And finally just seeing the windows logo. It was all there, but the monitor was not fast enough to show it. This happens more often when the monitor is cold.
Sometimes the bios can miss it, when you press the DEL key. So I suggest to just keep pressing it multiple times. If you got to windows, just tell it to reboot. And as soon as the screen goes black, start tapping the del key. Sometimes it can get tricky too, as pressing it too soon can cause keyboard errors.
In summary, if you can get into windows, you can certanly get into the bios.
EDIT:
btw, 4 sticks of ram would run at a reduced speed, DDR333. Consult the memory charts.

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