Intel 6200/6250/6300/6205, Win7 / Win8 64 bit Enterprise Edition, Dell Update Package. WiFi driver version: 15.8.0.5

I have an Inspiron One 2305 and it doesn't wake from sleep (sometimes). I set all power management to completely disable any trace of sleep mode, but it goes to sleep anyway and doesn't wake up--I have to do about 5 hard resets per week. Is there any solution?

The colours appear distorted and flicker very quickly between offset R, G and B. Only the colour white appears stable. The more black on the screen, the more pronounced the flashing and cycling is.