Macbook problems

[rim]

Hey, so yesterday, my macbook started moving slowly so I shut it down. It would not boot up for about 30 minutes (it cycled from apple to black screen then back to the apple symbol). Eventually my desktop popped up, but nothing was on it. I restarted it and it loaded up correctly, but slowly. safari would not open up, nor would most applications. I reinstalled tiger and now there are 56 gigs which means something did not erase. When i surf safari most websites shut down and I get "The application safari quit unexpectedly after it was reopened." Tried to download savosx and got "Warning The following disk images failed to mount reason: device not configured." Just don't know what tf is going on. Any thoughts or suggestions. thanks

 

[SteveU30]

First thing I would try is to check the HDD using the Disk Health Utility on the Tiger boot disc. Sounds like it may be failing.

 

[rim]

I used the apple hardware test and everything checked out okay. Could I have a virus?

 

[GGJstudios]

Could I have a virus?

No, since no Mac OS X viruses exist in the wild. There are only a handful of easily avoidable trojans.
Mac Virus/Malware FAQ

This may help in your performance troubleshooting:
Performance Tips For Mac OS X

 

[rim]

Well, now it won't boot up. All I get is an apple. How can I get it to open so I can troubleshoot? Thanks

 

[GGJstudios]

Well, now it won't boot up. All I get is an apple. How can I get it to open so I can troubleshoot? Thanks

This may help, if you haven't seen them already:

Mac OS X: Gray screen appears during startup
Troubleshooting: My computer won't turn on​

 

[SteveU30]

Can you boot to an install disc (if you have one), hold down the option key with the disc in when you hear the startup chime?