My Acer C720 is running slow, sometimes freezing sometimes crashing.

[Elijar]

My Acer C720 is running slow, sometimes freezing sometimes crashing. The time I can use it before this happens is decreasing rapidly, now down to 15 minutes. I have cleared the cache to no avail. What else can I try?

 

[COLGeek]

MERGED QUESTION
Question from Elijar : "My Acer C720 is running slow, sometimes freezing sometimes crashing."

My Acer C720 is running slow, sometimes freezing sometimes crashing. The time I can use it before this happens is decreasing rapidly and now down to 15 minutes. I have cleared the cache but there has been no improvement. What else can I try?