i was/am sick and my computer may be dying

I have been kinda sick the last few days. I am trying to do my briefs while my brain is not at full power, it is a little more difficult. Also, my computer had been going crazy so i had to wipe out a lot of things and may be finally dying. My little computer gone though 2 video cards and may just need to put to sleep but i am too cheap to buy a new one and i want to hold out till next school year because by then i hear there will be a new windows and i don't have to touch vista.