Is my computer still functioning good?

Today, I was on my computer, and it crashed (I assume it's a RAM overload) and it reset, it was stuck at this part during the bootup where there's a blinking "_" on the upper left corner. I force reset and it started up as normal. When I reset the next two times (both just to make sure nothing fishy was up) I noticed that after it showed the "HP" logo and right before it showed the status bar loading up (It lacks the Windows Vista logo but I didn't mind), there was no blinking "_". Is this a bad thing? A good thing? Should I panic?