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Hey guys, I am in a sticky situation. My Vaio VPCEB2AFD recently began having issues whereby its fan would begin spinning so fast and then it would shut down. This was not remedied by OS reinstallation. I thought the newer BIOS (R0300Y8) on Sony's website was going to help since Sony's own site claimed it provided "improved fan control". The update process went smoothly up until the point I was to wait for 30 seconds to pass after it had shut down for me to restart it. Most likely I turned it on before the 30 seconds had elapsed, because the laptop turned on as it would normally, BUT after around 45 seconds the CPU fan began spinning so fast and so loudly and the laptop would shut itself down. Since that time the laptop has been autoshutting itself down less than a minute after booting it. Is there anything I can do to remedy the situation? Thanks.
This might be a heatsink issue. Sometimes the contact between the heatsink and the CPU becomes improper - either due to mechanical shock (like if you bumped or dropped it) or due to the heatsink compound drying out. The laptop/CPU is designed to shut down to protect itself from burning up and getting destroyed.
When the fan spins, are you getting a blast of air from the vents - that you can feel from at least six inches away? If not, then the air passages might be blocked and could do with a good cleaning.
Find the disassembly guide for your model, and purchase a small quantity of thermal/heatsink compound - also a good screwdriver set if you don't already have one. Open up the laptop, clean the air passages, change the thermal paste and put the heatsink back properly so there is good contact between the heat collecting surface and the CPU chip. (If your model has a discrete GPU - nVIDIA/ATi - then you'll have two heat collecting surfaces to tend to).
DO NOT scratch the heat collecting surface of the heatsink, or the top of the CPU, as this will ruin the ability of the heatsink to get rid of the heat from the CPU. If the existing thermal compound is hard to remove, be very patient in removing it - it took me a good 5 hours. There are special (somewhat expensive) substances that will soften the gunk and make it easier to remove. (e.g. www. arcticsilver.com ).
Thanks for replying, but I do not think it is a heatsink issue. There is a time I took off the heatsink, and then placed an icecube carefully wrapped in a polyethylene bag directly on top of the processor. The result was the same, the laptop autoshut itself down, and the cube had melted just a little. No water touched the motherboard or processor, it was all contained in the bag. If it was an overheating heating issue then the cube could have overcome it ( for a minute or two at least) since the cube absorbed more heat. I also used a huge metal block that I had put in the freezer for a couple of hours as the heatsink, but the result was also the same; it autoshut down. Am guessing there is something that is tripping up the BIOS.
Here is an update; I made my USB flash drive boot into MS-DOS, I renamed the R0300Y8.ROM file to AMIBOOT.ROM and then copied this file alongside AFUDOS.EXE into the flash drive. I booted the laptop and entered BIOS before it autoshut down and changed the boot priority to make External device (USB) the first. I then let it power down. I plugged in the flash drive then pressed Ctrl+Home for a few seconds and then pressed the power button. I continued holding the Ctrl+Home keys till I got the C:> prompt. I typed AFUDOS.EXE AMIBOOT.ROM /P /B /N and pressed Enter and watched as the flashing progressed till 7% before it was interrupted by the inevitable autoshutdown. The laptop failed to start for a few seconds, but after it did it felt like it did not power down as fast as it was before initially. I will keep doing this in the hope that something will happen.!
3 - You will have to disassemble (remove hard disk and memory RAM) your notebook sony vaio and remove the plug from the internal battery.
How to take apart Sony Vaio VGN-NW25GF/P and reapply CPU thermal paste
https://www.y out ube .com/watch?v=V1SmzX3LW3U
4 - Unplug internal battery.
5 - Then press the power button for 30 seconds to discharge all information bios (date, time, etc.).
6 - Plug the AC power adapter in notebook sony vaio.
Press the power button and enter the bios setup.
7 - Wait about 2 minutes into the bios setup. If you do not shut down the computer then the problem is solved.
I had this problem again and had to disassemble the laptop and do it all again.
Solution: put electrical tape (duct tape) in the plug of the internal battery. Do not connect the plug of the internal battery on the motherboard again.
Electrical tape will serve to plug the internal battery does not have contact with the motherboard.
The bios config will be kept by the external laptop battery. If the problem happens again, remove the ac power, remove the external battery, press the power button for 30 seconds to delete all bios information.
Now you no longer need to disassemble the computer.
Problems? See this thread at archive.org.
