BSOD overclock and sli drivers and 177.60

I noticed that after some sli ForceWare 177.60 to 8800GTX and 8800GTS had Blue screen after a few minutes of games, new drivers with the 177.98 do not solve anything so I told myself that the problem was due to my settings or something. I tried everything. I remain more than offset to overclock my E4400 and as if by magic over crash: pt1cable:. I can not understand why after returning to the frequency of origin of the E4400 over crash of blue and blue screen with SLI. I thought of power supply problem but why it works with the 177.39 and 177.19? I had no problem playing with the E4400 @ 3GHz and sli so I think the problem is feeding a dismissed. So I ask to you to enlighten me on this weird problem.

If you come back to a previous driver to 177.60 you always worry?

So if a driver trying to 177.39 superior crash and should I cancel my overclock frequency and return home so that everything works normally. I updated my bios motherboard but nothing.

So if you submit the 177.39 driver over crash that's it?
I have a similar problem, my 8800 GTX in SLI plant 3DMark06 while not so long ago (before those rotten Forceware unless I am mistaken! lol)