Well, first of all, sorry for resurrecting this thread but I thought it would be better than to start a new one.
Okay, so, formatted my C-drive clean, did a fresh install of windows, no errors this time. I have gotten 3 bluescreens since friday, e.g. 3 days ago, once a day so to speak. I hope anyone can take a look at them - I can't make out what they mean. One points to watchdog,which seems to be a windows file. The others point to nvlddkm,sys or ntoskrnl.sys which are proprietary of Nvidia , ie my graphics card, and Windows NT Kernel..
Hard stuff.. Might there be any errors with the graphics card? Its age is about 8 -10 months..