I think it’s half-way inevitable that your computer suffers a major malfunction at least once during your college career. Sometimes you have to replace it, other times you have to wipe it clean. Sometimes, it’s almost dead, but not quite.
My computer died just this semester and had to get wiped. My new computer caught a virus in about 2 weeks, and I was left straggling.
There are preventative and reactive measures you can take when you computer is on the verge of dying, or is sort of dead already.