Desktop computer not working? *Help Needed!*

[sunny & the 5 egg layers]

My 2006 Dell Desktop Computer will not turn on. Yesterday the computer completely froze up so I had to shut it down. I had no other choice but to shut it down by the power button (instead of going to "start" and shutting it down.) Ever since I cannot turn the computer back on. All that I can hear is the fan working, but nothing else. Does anybody know what I can do to fix it?
Thanks in advance.

 

[seedcorn]

Hopefully you backed up your hard drive.

For $300 go to WalMart and buy a new one. Unless someone has an answer, it would be cheaper than taking it to IT department.