Windows 7: Windows 7 hangs after "Starting Windows" animation

So,
I have an old Dell Optiplex GX620 with Windows 7 Professional that I have been using as a media PC hooked up to my Panasonic flatscreen. I normally do not shut the computer down that often, instead putting it into sleep mode when not in use. Last night when I tried to wake it up it just showed a blank screen with a cursor. I manually shut it down and when it restarted it would not boot up and went into a loop of restarting. I put the installation disk in and let the Startup Repair program run overnight. When I tried to start the computer the next morning it booted up to the point where it shows the Starting Windows animation and then goes to a black screen with a cursor. I ran the Startup Repair program again but it reported that there were no problems. I restarted again and again it proceeded past the starting windows animation but no further. I am able to move the cursor but it will not proceed past this point. I have tried booting up in Safe Mode and get the exact same result, black screen with moveable cursor. HELP!!!

Hello cmillican and welcome to Seven Forums.

One of our resident experts prepared this troubleshooting guide for failure to boot issues. You may want to go thorugh this step by step to see if it fixes your computer's problem. Please post back if it helps or not.

Troubleshooting Windows 7 Failure to Boot