RANDOM BSOD on ntoskrnl.exe

Hi my friends, i've sometimes bsod with ntoskrnl.exe driver..

sometimes i'm working on pc.. sometimes there is screensaver on..

i don't know why..

hope you can help me!!

Hi,

Rt630x64 Rt630x64.sys Thu Dec 27 19:04:06 2012 (50DCE1F6) << Update from realtek.com.tw

RTL2832UBDA RTL2832UBDA.sys Wed Aug 01 02:09:56 2012 (5018C834) <<<< Realtek
RTL2832UUSB RTL2832UUSB.sys Wed Aug 01 02:11:02 2012 (5018C876) <<<< Realtek


Sentinel64 Sentinel64.sys Mon Jun 02 02:14:55 2008 (48438FDF) <<< If there is no update, must be removed from the system.

SNTUSB64 SNTUSB64.SYS Mon Dec 10 04:10:28 2012 (50C5A704) <<< Update.

Hi, i've tried to upgrade drivers.. but sometimes bosd come up..

these are the last three minidump..

Sentinel64 Sentinel64.sys Mon Jun 02 02:14:55 2008 (48438FDF)

SNTUSB64 SNTUSB64.SYS Mon Dec 10 04:10:28 2012 (50C5A704)

RTL2832UBDA RTL2832UBDA.sys Wed Aug 01 02:09:56 2012 (5018C834)
RTL2832UUSB RTL2832UUSB.sys Wed Aug 01 02:11:02 2012 (5018C876)


In addition, I would remove ESET.