Hello, Does anything show on the screen? Mac or PC? I would unplug the CPU for about 5 min. then plug it back in and start up again. Also, and this may sound funny, make sure nothing is resting on the keyboard. I once had a client who had moved his clipboard forward so the top was pressing on the space bar so the computer couldn’t keep up. I didn’t notice…...I mean he didn’t notice for about 5 min. If your on a PC you could try starting up in SAFE mode (hit f8 at start up I believe) On a mac, well, lets see if you have a mac first. Lemme know how it goes.