random BSOD errors. I know its either mobo or hard drive - how can I narrow it down?

[Sphinx]

RAM is good for sure. It has been tested and also is an RMA return from Kingston.
Power supply is good.


The BSODs don't seem to be a driver issue, as they often refer to many different things and also the OS kernel, and happen quite randomly.

I have also noticed very subtle weird things like EXEs being "corrupt", cds that I've burned missing certain files, etc.

I suspected the hard drive and did a complete error-checking, yet I still get many BSODs (about once every few hours and the frequency seems to be increasing). Its almost unusable. The hard drive SMART detection doesnt show anything abnormal about the hard drive.

I want to know how I can narrow it down without swapping in a new hard drive. I have a feeling some path on the motherbaord is no good. But motherboard issues are worth dealing with just throw it away and get a new one heh.

Of course, it could be the sound card this whole time. It is a Creative... so... heh
I guess I will try to run on onbaord sound tonight and see if I get any BSODs.

Any help appreciated,
Thanks.

 

[Sphinx]

but the weird corrupt files and suich wouldn't be explain by BSODs occurring from a sound card driver issue (at least I don't think), which is why I have narrowed it down to hard drive or motherboard.

I will try running in safe mode tonight, yet still that won't help me figure out between a motherboard and hard drive problem.