And yes, constant BSOD points to a serious problem of some kind. RAM is one suspect, as is the power supply. I would at least open the case(with everything shutdown and the power cable unplugged), and reseat every card, all the RAM and any cables and connectors inside
But its also possible that maybe Windows has become corrupted. If you have been saving drive images, I would check the desktop for anything that should be saved(and save to any other drive for later retrieval), and then restore Drive C: from a recent image. If you have not been saving drive images......GRRRRR
You may find yourself needing to reformat and start with a clean install of everything(ugh!!!).