changing a resolution to lower

[Tofu]

Hello Alan, Mister Micawber, Beeesneees, Mordant, Esl_Expert and other native English speakers,

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http://tinyurl.com/2ac4brw
If you cannot print at all, changing a resolution to lower could improve the situation.
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Do this sentence sound right to you? Is "at all" necessary?

"If you cannot print, lowering the resolution may help."
"If printing does not start, try lowering the resolution."

How do these sentences sound?

[Mordant]

Your last two sentences are certainly better.

A corrected version of your first one:

If you cannot print at all, changing to a lower resolution could improve the situation.

"At all" is not necessary.

[Tofu]

Thank you, Mordant.

"If printing does not start, try lowering the resolution."

printing is correct without "a" or "the," isn't it?

[Mordant]

"Printing" is perfectly acceptable without an article.

[Tofu]

Thank you, Mordant.