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From the description you have a hardware problem possibily caused by the ipod plugged into the headphone jack of the laptop. I'am convinced the sound section on the motherboard is damaged, probably the audio output ic. But to trouble shoot the problem will require someone with a strong background in electronics, I would suggest going no further until you have estimate in hand.
Hi, Powering on the laptop after liquid spillage can damage the hardware (motherboard etc) due to electrical conductivity caused by the material (like salts) in the liquid. If such instance occurs, the laptop is supposed to be opened and cleaned thoroughly to remove any traces of liquid. So, it is recommended that you get it checked/ cleaned by a professional.ONLY if you are not comfortable with working
inside electronics, you can download the maintenance manual from the link given below and clean the laptop yourself, otherwise I suggest that you should get you laptop checked
by a professional for servicing. ThinkPad T40 Computer Hardware Maintenance Manual
Hope it helps! Good Luck! Thanks for using Fixya! CreativeTECH
Steps to be followed:
1. check whether audio driver is installed properly ? if not install audio driver & check 2. check audio setting in control panel & confirm 3. connect external speaker in laptop and check whether sound is coming? if sound is coming then ur laptop internal speaker need replacement 4. if there is no sound in external speaker then need to check ur motherboard or sound card. All the best.
that means the guy or someone who replace the new harddrive didn't to a good job on restiall a new window vista for you, just simply go acer.com and search your model, redownload the sound card driver.
Sounds like everything has been done that can be, new sound card, drivers, and format. The only thing left is the motherboard. It's rare, but I have seen a few machines that when the sound card went out, especially if the card went out violently by overload, short etc... the traces (circuit paths) in the motherboard, or the seat for the card on the motherboard were damaged. Have them run the traces and check the seat on the motherboard to determine if this is the cause of the problem. If this is the case, unfortunately, motherboard replacement is your only option in order to get the sound to work.