I have Acer 5930G notebook , it has P8400 2.26GHZ cpu and PM45 chipset.I tried all oc programs but I didnot reach success.Usually I am taking black screen when I try to find true clock generator.Ýs there anybody who know true generator of this chipset? Or have you got any suggestion about this? (Also I tried bios editor but no success. "no bcps found" error)

Do not OverClock your laptop. It's not designed for it.

It has:

No adequate cooling
No hardware designed to be OverClocked.
And the Bios will be restricted a hell of a lot.

Even if you were to OC your laptop, the heat already generated from the stock
is hot enough, the OC would just cause a malfunction sooner or later and/or
damage the unit.

I dont oc so much, only 100-150mhz and I have got notebook cooler so there is no problem with heat.

Mate, a 100Mhz to 150Mhz will not make the slightest difference at all.
You will notice absolutely nothing. Neither will your system benefit from it at all.

Sorry