Dear Lancer and all the guys, sorry for the late reply as I had a meeting with my client this morning and was tinkering with the problem pc last night.
To answer Lancer's question - yes ! it is just like when you are surfing the net or clicking on to open folders - then it suddenly switch off and start again - as like you said "much like it would if you press the hard reset button"
I thought it was the video card and swapped the card last night - still happens.
PSU ?? Hard to say unless it is really dying out because used to hook up to 2 hard drives 2 optical drives 2 extra fans and 2 extra lightings mods - and was running well without glitches before.
RAM ? I did a Memtest and showed up okay - the only thing I didn't do was to run on 1 stick - (at the moment 2 sticks - 1 GB and 512 DDR unbuffered ).Anyway, already placed an order for a new psu (550W) and what else ?? yeah...I even did a fresh install in case I screwed up some of the registries...still the same.
Just a question : how do you type chkdsk/F - with the F parameters ? I tried but can only run chkdsk with no F parameters.How do you do it ?
In the event viewer it only showed application error.
Although I can still work with the other pc , but you know , having that box at home and your mind keep on cracking and saying 'why it won't work ' is the real bug.Any more suggestion ?