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This may be an issue with your usb drivers. Update those first, then if that fails, I would try one of those adapters that goes from USB to the old school mouse and keyboard connections and plug that in to see if it works.
If your Keyboard and mouse are PS2 type, turn off your system, unplug them and try a USB type mouse and keyboard instead. If you are already using USB type mouse and keyboard, then try plugging them into different USB ports. Bootup in Safe Mode if possible. If you do not have keyboard functionality during the initial boot process, you may have sustained damage to the motherboard. The fact you mentioned a noise (speaker type?) and then lost component function, would indicate a possible hardware failure
its a very common hardware fault with these laptops, can you open setup or bios? that is opened right when the power is turned on the and screen says press F2 to enter bios or setup, if you can't enter bios then you have a faulty motherboard, usb ports don't work either? (usb keyboard and mouse don't work?)
Try booting your computer from CD ROM with the OS CD/DVD already inserted and when prompted just try repair. If that does not work re-install the same on the same 'partition' assuming it to be C by deleting the the windows system files only. While doing so keep the internet on and immediately after the basic version of the OS is installed and the m/c boots-up for the first time, go to the official website and download the latest drivers for every component like toch-pad, keypad, display, audio, etc.(i.e. almost all the drivers)
make sure the mouse and keyboard are in right connections...if you look closely youll see icons next to ports.
try without mouse at first start up ,load windows and use key with windows logo on it to access start and scroll to shutdown tab and restart...plug in the mouse before restart.
if logo tab isnt assigned press ctrl + esc to access start menu.
I have a Acer 5100 I am facing the same prolem my USB ports stopped working and then the Keyboard the system boots but i cannot do anything like the password nor can i start in safe mode or go to set up, if somebody can help me sort this problem ,thankyou
first of all u have to re install windows( operating system)
before inserting the windows cd u have to plug an external keybord and mouse and start the system.
boot from cd and continue.
the laptop keybord and mouse could be unusable anymore.
Did you say that you CAN plug in a mouse or keyboard and the machine boots fine, or are you asking if you can do this? If you computer is freezing up at the BIOS screen then most likely you have a failing memory stick.
If you are familiar and comfortable doing so, try removing both sticks (if you have two) of ram. Make sure you have the battery removed and the power cord unplugged. Then try to boot up the machine without the RAM and with only the power cord plugged in. See if you get any type of message or response. Then, hold down the power button to turn the machine off again, remove the power cord, and try booting with just one stick of RAM at a time.
I have this same model and bought from tigerdirect around Nov 06. I started having problems with mine around the first of Feb.08. As you noticed it is a few months out of warranty. My keyboard and touchpad will not respond during boot up. I too can not get into bios. I have unsoldered CMOS battery and resolderer and still no response. I have noticed that Acer has a hidden Active X file in system32 that may be an interactive file on how the system performs. I do not know anyone that had an Acer for more than 2 years. I think Acer has included a bug in their systems to corrupt to function of the motherboard. I am always working on computers and I have never seen this happen to see many people on these forums online. I am researching Acer computer now and will probably find the problem. My usb mouse lights up but do not move the mouse what so ever. I would recommend anyone not to buy. Once out of warranty the only voice you will hear before speaking to Tech Support is Credit card # and 2 dollars an hour charge and that may not help. I really believe that Acers lauch manager holds the info I need because there was an activeX file call lunch.dll that they have recently added a patch.