Hard Drive dying or Windows Error?

[Spyder4765]

I've had my computer for 5 years now and never had any problems with it. Well, just today I left my dorm room and when I came back my computer was sitting in DOS mode and said "Operating System not Found" so I rebooted and Windows came up just fine. So I was on it later and it froze up and did the same thing, so I rebooted again but it came up again. So I turned it off and then when I turned it back on it worked fine again. Now I'm typing this now, I'm not sure if my Hard Drive is dying or if it's an operating system error. So I'm gonna post this on the OS part of the forum. Any help would be appreciated.

Specs:
Windows XP
1 GB Kingston PC2700 Ram
80 GB Western Digital HD
Pentium 4 3.2Ghz Processor
Radeon 9700 Pro

 

[office politics]

boot to the recovery console and run chkdsk

 

[Spyder4765]

Ya, I did that and it didn't find anything.