07-03-2016 09:17 AM
another thing - fan dust removal doesnt seem to reduce noise at all.what it usually sounds like
07-03-2016 03:35 PM
Welcome to the Lenovo Community !
The first step would be to clean the fan and heat sink if it's never been done. Accumulated dust may have built up on the fans blades which can lead to additional noise and inefficient cooling. The easiest way is to open the back and use a can of compressed air to blow it out. You could also try using the canned compressed air in each of the vents if you do not wish to remove the back cover, but removing the cover gives you better access. I would do the cleaning outside in order to eliminate the dust from flying around indoors. Just use short bursts of air to clean as a prolong blast may damage the fan. If the noise continues after a cleaning then I would consider replacing the fan.
Here is a link to your model's Hardware Maintenance Manual that will explain how to remove and replace various items such as the back cover for your reference.....
07-04-2016 07:49 AM
I'm not an owner of your model so I can't say for sure, but looking my various Lenovo laptops it will be either a phillips or torx head screw. The phillips head has an cross pattern where as the torx head is a six point star pattern. On my Lenovos the torx heads will take a T5 driver. The torx drivers can be purchased in a set so you will have mulitple sizes just in case. Here is one example of a retailer in the U.S. that offers a torx driver set....
A similar precision phillips head driver set.....
07-05-2016 04:12 PM - edited 07-06-2016 06:06 AM
Yes, the screws are definitely phillips. Although I can't say for certain, yours are similar in size to the ones on my Thinkpad Yoga and a phillips P0 has a good fit. If you are in doubt then get a precision phillips set that covers a range of the smaller sizes. Once you have a set you will find other uses for them as well.
Edit: corrected typo