Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Chronic power failure issues. Overheating.

Beware the Toshiba Satellite. The battery and AC power system does not work properly. The AC jack often "loses contact" with battery allowing battery to drain while it is plugged in and should be charging. AC power fails frequently and if battery has also drained, computer will simply power down. Only way to bring it back up is to manipulate the AC plug in its jack and try to restore power to the unit. Sometimes this means only putting the plug halfway into the jack for me and putting a barrier around the machine so that nothing will cause it to wiggle even the slightest amount. Warranty repaired twice, Toshiba will not extend warranty or offer replacement. Warranty is almost over and problem will undoubtedly reoccur. Fan runs constantly and system overheats causing it to shut down or cause the dreaded "... has encountered a problem and must close..." error. Very unhappy with the customer support technicians at the toll-free number.