Hello Ianlin, welcome to SF! Back as promised.
I'll have a look at the dump but please also fully update your system specs (see 4th post here http://www.sevenforums.com/general-d...rum-rules.html
and also post full info as required here http://www.sevenforums.com/crashes-d...tructions.html
It is the fastest way to the solution....
Your dump points to part of eset: eamonm.sys Try to upload newest here Best Free Antivirus Software Trial: Free Home, Business and Gaming Download from ESET
This driver has a much newer version: stwrt64.sys Sun May 06 02:40:37 2007 (463D2405)
You need to get this driver (and maybe others) from your mobo manufacturer. In your case I'd just check on the DELL site and update drivers for your system.
You also have this old 32B driver for a modem: mdmxsdk.sys. Won't work, please delete.
Zigzag beat me to it, well done!