Acer's warranty on accessories is here
is states "DAMAGES CAUSED BY MISUSE, ABUSE, ACCIDENTS, FIRE, THEFT, DISAPPEARANCE, MISPLACEMENT, FLUCTUATIONS AND POWER SURGES, CONNECTIONS TO IMPROPER VOLTAGE OR INCORRECT ELECTRICAL LINE VOLTAGE, VIRUSES, MALWARE, RECKLESS, WILLFUL, OR INTENTIONAL CONDUCT;"
You can call 866-695-2237 (United States) and ask about getting it repaired or call the Acer Store 1-800-910-2237.
If it has a serial number, you can try service
http://customercare.acer.com/customercare/Default.aspx