Well whenever a printer makes a "Terrible Noise" this is usually the print head chattering against the stop, this is a fault that isn't recoverable by simply turning Off & On again. This unit will have to be repaired before it will function properly again.
This condition can happen for many reasons, one thing to check, is the head position sensor, as if this fails or is occluded, this will cause the symptoms you describe.But as related it maybe many things one simply has to troubleshoot to attempt to isolate it.
The very best thing you can do IF you wish to DIY, is to use the service manual's troubleshooting procedures, to isolate and hopefully remedy the issue.
http://www.retrevo.com/support/Canon-iP4600-Printers-manual/id/22963ci253/t/2/
Above is your user manual below is your service manual.
http://elektrotanya.com/canon_ip4600_ip4680_sm.pdf/download.html
However if you do NOT wish to DIY, then the best thing you can do is take the printer to a printer repair shop, and ask for a "Quote" only first, then go from there once appraised of the information.