Overclock A10 5800k

[ilmank]

Hello guys, im new in overclocking and i have a question...

Im trying to overclock my CPU A10 5800k 4.2 GHz MAX Turbo.

My specs are:
A10 5800k 4.2 GHz MAX Turbo
8 DDR3 1333
GTX 750 TI
ASUS A55BM-A


So... i got my CPU working in 4.0 MHZ (1.3 Voltage) from stock.
Few days ago i tried overclocking to 4.1 MHZ from BIOS and worked stable... i've been using 4.1 MHZ (1.3 Voltage) one week now without problem...
Today i tried to go for 4.2 MHZ (1.3 Voltage), so i changed in BIOS without problem... but when i started windows i got a BlueScreen, so i guess its not stable and 4.2 makes my pc crashes and got blue screen and i went back to 4.1 MHZ.

This is the BlueScreen error:

Firma con problemas:
Nombre del evento de problema: BlueScreen
Versión del sistema operativo: 6.1.7601.2.1.0.768.3
Id. de configuración regional: 11274

Información adicional del problema:
BCCode: 3b
BCP1: 00000000C0000005
BCP2: FFFFF800038E4AB8
BCP3: FFFFF8800650AF20
BCP4: 0000000000000000
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

Do you guys have any idea why this happens?
May the 4.1 MHZ be the limit for my CPU?
Shuld i try to use diferent voltages?

Thanks

 

[waltchan]

Enable turbo boost (or core performance boost) in BIOS. Stock voltage will increase to 1.4V, so you can go 4.4GHz.