I have only had my laptop for a few months and today, out of nowhere, the computer shut down while connected to the wall outlet and will not boot. the power light flashes when i press the power on button, the system grinds once, then the power light goes off again.
the unit has been running hot lately, so i was afraid it might have overheated. any thoughts?
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Re: acer 4420 shut down, will not restart
Allow heat to dissipate. Clean vents with air compressed (on power off only) Use fan support for laptop if you use CPU intensive application in hot environment or if air circulation is not optimal (on soft support, on your knees etc)
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The laptop must be dismantled to access the motherboard, buy a can of compressed air attach straw. Now remove fan and the heatsink, blow out all open ports and fins on the heatsink and fan, next! remove thermal grease from the processor and heatsink with rubbing alcohol and a paper towel, now! apply fresh thermal grease to the processor and heatsink, "small thin layer evenly spread" now assemble, "solves most heat related issues"
Bring your Laptop to the nearest Computer Center or any Local Technician to see your laptop. Laptop like this are problem with short circuit or manage power voltage connection. Also it's having some trouble with motherboard pizza's inside. Good luck!
From your start menu, choose computer, at the top of that window hit system properties, on the left hit system protection, It should be open to the system retore page, Hit the system restore button. What you want is to restore to the last day your computer shut down right. For me that was just before the last windows update on 5/7/2009 when my computer as well started not shutting down. The system restore doesn't erase any of your files it just restores the system files and drivers back to the date you specify. Worked for me!
I had a similar problem with my Acer Extensa 4420. After reviewing all the recommended solutions, I decided to open the case to see if I could see a disconnected cable or other easy explanation.
However, when I pulled the heatsink off the CPU and found that the heatsink compound had almost completely dried out. I cleaned the heatsink and applied new compound, then reinstalled the heatsink and put the computer back together.
It works great. Interestingly, this is the same problem that plagued the XBox 360 and the "red rings of death" failure. Just an option that is easier than pulling the entire case apart.