no no
The computer only resets when the battery is removed. The alternator just charges the battery, so if the battery is left connected when the alternator is replaced, the computer should not reset.
All that would be left would be a short in the wiring to the alternator.
did you check the alternator??
Inside the alternator
Voltage regulator or loose wire.
Could be a bad signal sent by the computer or the alternator is not charging to full capacity. Have someone check the charging amps on the alternator.
Check the battery cables or starter.
Alternator is not charging. Have it tested and/or replaced.
Sounds like you have something that is on all the time and drawing power from the battery. Check, dome, courtesy, trunk, hood, glove box, and brake lights.
You have a bad battery or you have a bad alternator.
You can have the alternator tested free of charge at just about any major auto parts store. By the way, a bad alternator will not "discharge" a battery - the alternator's function is to provide the charge to the battery. If the alternator is faulty, then it is not providing the charge necessary to keep other components from discharging the battery. I had the alternator tested and it was charging. If the alternator has a bad diode, it will discharge the battery. I replaced the alternator and everything is fine.
It could be an alternator. Check with a mechanic if that is the issue.