By HD test, I meant the official one for your hard drive. It'll check data which a 3rd party tool might not know exists. Also, I'd turn on SMART detection in your BIOS if the setting is available - that might give a warning of an impending hard drive failure (though of course, they do fail undetected too). Even things such as bad sectors can cause fatal BSODs which stop PCs from booting - I've seen a laptop BSOD on every boot due to a single bad sector, but unless a certain threshold is passed, drives generally don't qualify for a replacement - in my experience, every manufacturer will replace a drive regardless though.
I don't know about the software settings for the TV. Do you ever get an error like the one Ho3n3r got in the
other thread (namely a
nv4_disp.dll reference)? I asked him if he has dual-monitors, as some do get XP and Vista crashing and BSODs with dual-displays, but normally there'd be a reference to the file above (for the record, there are ATI and Intel equivalents - it is (or was, as Win 7 seems to have fixed it) a DirectX issue rather than a driver issue), or one which it calls, and it seems you aren't getting anything like this. I'd be quite sure running a file from a DVD instead of a hard drive would make little difference. Any difference would merely be stepping around the problem rather than finding the cause.
There is one thing you can do which might show up the problem. Install the Microsoft Debugging Tools (32-bit
here and 64-bit
here - for 64-bit, you want the
Native x64, not the
Itanium). Once installed, go to
Debugging Tools for Windows in the Start Menu, then open
WinDbg. Go to
File and
Open Crash Dump, then navigate to
C:\Windows\minidump and open the most recent file there. Windbg will process the file and at the very end, will give what it feels is responsible for the crash - either a hardware issue or the name of the driver which it determines is causing the fault (which might not be conclusive in itself - a driver fault can still be caused by faulty hardware - but it will narrow down the cause of the issue, so we know where to concentrate on).
Regarding
memtest86, yes you download it then open the .iso in a program such as
ImgBurn, then burn that (it is the CD image file - you don't add it to a CD image) and then boot from that.