asmudius

A - When I'm on high performance default clock becomes 835Mhz and 2500mhz memory (which I have to downclock to 2350mhz to get rid of the artifacts) And when I'm on lenovo dynamic graphics : default core clock becomes 950Mhz memory clock stays at 2500mhz. B - I'm not sure, but when I install a more recent driver, while it's installing it says that it uninstalls the previous driver before proceeding... Which by the way once is installed my system becomes instable and becomes very slow at certain times like when switching between applications... That's why I always go back to the driver that came with the laptop (295.55) (I guess that answers your last question). C - 62.3%

Were u encountering those artifacts (Lenovo bug) on your Y580 when playing games before u flashed the BIOS ?

I meant the artifacts, small green and purple pixel flashes that appear randomly and after a minute or so the game crashes and then I get this error : "Display Driver NVIDIA Windows Kernal Mode Driver, Version 295.55 stopped responding and has successfully recovered." Tried updating drivers and everything but nothing worked other than down-clocking it.

I don't know if this question has already been asked, but is flashing the BIOS going to fix the artifacts bug I get whenever I overclock the GPU's memory clock to more than 2350mhz ?

I'm confused, I don't know whether I should use 8.00 mod or the 8.0x to flash my 8.00...and does the procedure in the first post work for them both ? P.S my laptop came with windows 8 which I have deleted and installed win7 instead.