Yes, the Epson default color scheme/formula/plan (whatever its called) needs a touch of blue in its BLACK. A different color scheme will often combine (different amounts) of colors. No two schemes are the same. I especially like the H-P printer setup asking "what color grey"... I didn't know grey was a color. What is it called - light black ? When you print something, check the defaults where you chose B&W, for the scheme Epson "VIVID" (I think thats the name) and change it to something else. My WorkForce is set to use "RGB-color" and prints with the blue-black. My H-P Laser is "sRGB" something different than regular RGB??? The H-P black is much finer resolution, but not as dark as Epson's blue-black. I also notice the Epson leafy green (blue+yellow), different than H-P grass-green (blue+yellow+black). Considering all of todays printer choices; I'm afraid plain-old-B&W is no longer vogue. I have an old LaserJetIII that blasts Black on white paper. Thats it.

One kind: Remove axle pin (under hubcap) & slide out. Another : The axle has a flat-indentation that will not allow removal from the braces. You must remove the braces & turn them to align the slots. Yet another: more modern: A spring-steel clip that 'bites' the axle. Often has a plastic or tin cover. Replacements found on eBay. Post a picture... get an exact answer. The years of Radio Flyer is more than me !

Try this.... How to replace a charging port?

Here ya go............ What is apple serializer software?

On the top, nearest the steering shaft.

Sounds like a cable is 'awry'... But a web search for "Screen Not Responding To Touch" will open the can of worms ! Read ALL of this one: Touch Screen not responding

Same problem ? Nikon COOLPIX S3600 Troubleshooting

If you wait until tomorrow, does the alert go away ? Mine is Verison, but same issue. I found that Clearing all 'missed' calls often resets it.

Winnie - the battery is shot. Remove the old battery, and match its voltage & mAh. The higher the mAh, the higher cost, but the longer it'll last.

You realize thats a $50 battery ? Beg / borrow a good battery, to make sure. I have never fixed a $20 laptop with a $50 battery. Lottery tickets have better odds.