The best magazine
It's amazing how many people buy an XBOX 360, and within a couple of months, the unthinkable happens. The XBOX 360 E74 Error suddenly comes out of nowhere. If you don't want to package up the unit and send it off for repair, try this simple solution which should sort the problem.
The AV cable can sometimes be the culprit, either it needs replacing or it has a build up of muck and dust around the terminals. To start with unplug the cable and shake / blow out any dust and muck that might be lurking inside. Reconnect and turn the unit back on.
If the clean out option fails to work then it's worth buying a new cable or borrowing one to make sure that the cable isn't the issue. This is often the problem area, but if after rebooting your XBOX 360 the E74 error is still there then you will need to move to the next step on how to fix XBOX 360 E74 errors.
The E74 error can still often be fixed without sending the unit away, it's a more complicated process and there is detailed information available via XBOX 360 repair guides which can be sourced via the internet.
So, if you are suffering from the E74 error or your Xbox 360 freezes, the red ring of death occurs or other irritating problems occur, consider getting a detailed XBOX 360 repair guide. They usually have pictures and videos along side detailed instructions that you can follow step by step
So, as a first step in solving XBOX 360 E74 errors, check the AV cable, clean it, replace it, then get an XBOX repair guide. The solution is usually relatively simple and you can avoid sending your unit away for repair and waiting 2 months to get it back
Source: ...