ascertain the user's priorities
The first thing to do may be fixing graphics options. Open your menu with the buttons on the physical monitor. (that being the ones you can touch) Then find degauss and select it. That should fix the waviness.
take hard drive out
cable connection power drivers
equipment power low-ink warning out of paper
The first thing you should try is your breaker box or fuse box you may just need to replace a fuse or switch a breaker back on.
The first thing you should do is check the iPad user manual for troubleshooting. If this fails, try calling Apple, or your nearest Mac store. It may also be a good idea to contact the store you bought the product from.
verify the complaint
What is the first thing you should do before replenishing consumables
In the Network plus troubleshooting model what should you always do right after you test the theory?
simple to complex
Verify the complaint while the driver is present, and if possible replicate it.