Disenchanted

I feel disenchanted by the limited capacity of the computer.

Source: tatoeba (48168)

I visited Chiang Kai-shek at a lake resort on Taiwan. Chiang still dreamed of returning to the mainland, and once again he urged that America support such an effort. He argued that the Chinese on the mainland were disenchanted with their leaders and ready to rally to another force.

Source: wiktionary

And the sword that had visited Earth from so far away smote like the falling of thunderbolts [...] and the runes in Alveric’s far-travelled sword exulted, and roared at the elf-knight; until in the dark of the wood, amongst branches severed from disenchanted trees, with a blow like that of a thunderbolt riving an oak-tree, Alveric slew him.

Source: wiktionary