you may have bought some time but with the capacitor going its only a matter of time. Go to the MFG website find the service guide, it will tell you how to do the rip down, replace the capacitors, clean it up then back it up. BTW get the hard drive diagnostic program from the HD MFG and make sure its fine. Lastly check the ram with a memory checker program.
Dell has a dos level hardware diagnostic suite, you should see if there is one for your system.
Will check. Thanks!