Screen flickering with 8700M GT

i have an 8700M GT Nvida graphics card in my laptop. Toshiba Satelite x205-S9359. and i am running windows 7. i upgraded the graphics card driver from nvidia and now every once in a while, couple times a minute, my screen flickers.
does anyone know how to resolve this? i have tried installing and older version of the driver but the flickering stays. the only way i've been able to find to fix the flickering is to reformat my computer.

i don't have a copy of XP or Vista and do not want to downgrade my OS. i'm really happy with 7, dislike vista a lot

it is a driver problem i know almost for certain because i was using a driver for the desktop version of the graphics card and when i installed the driver for the notebook version which is what i'm using, my screen starts flickering every once in a while
the only reason why i switched was because my frame rates in games was getting destroyed. like 5 FPS when i should be getting like 40+ and when i switched to this driver my FPS went back to normal but screen flickers every once in a while

that's what i origin did and it worked great. but recently it raped my FPS on everything. After i install the notebook version though, even if i install the desktop version back on, i still have the flickering with the screen =[ the only way i've been able to get rid of that has been reformating which i really don't want to do again for a month or so

i havn't talked to toshiba support yet. havn't had the time to, was going to try to over the weekend.