There is a high pitch sound produced from my Latitude E4310, it sounds like that one produced from TV.
Its sources are the two speakers at the front at anytime even when I set windows to sleep.
Also, at the left bottom corner of screen when the battery is being plugged in as well as the power supply and increases as I remove the power supply and run on battery only, it seems to be like: sssssssss silent sssssssss silent sssssssss...
I have two questions:
1- Is it normal for the laptop to produce that sound ?
2- If it is not normal, is it okay to keep using the laptop without any problems except getting used to that sound ?
Here are the solutions I tried so far:
1- Tried windows 7/8 also pirated/original.
2- Muting the mic
3- Turning the wifi off
4- Increasing/Decreasing brightness
5- Turning off the screen but setting brightness to 0
6- Using external monitor with laptop screen on/off
7- Removing keyboard to clearly hear the sound, it appears to be more loud coming from the center of motherboard with some rrrrrrr mixed with zzzzz sound.
Monitoring temperatures shows 46-50C on idle, the laptop is a little hot from the bottom but I suppose that it is normal for a metallic bottom to quickly and effectively conduct heat.
Here is one of the sound: https://drive.google.com/file/d/0B8b6LZuxzffteTFoaU1BNFFsTGs/edit
Another sound: https://drive.google.com/file/d/0B8b6LZuxzfftY2pkTW14VkdOSUE/edit?usp=sharing
Its sources are the two speakers at the front at anytime even when I set windows to sleep.
Also, at the left bottom corner of screen when the battery is being plugged in as well as the power supply and increases as I remove the power supply and run on battery only, it seems to be like: sssssssss silent sssssssss silent sssssssss...
I have two questions:
1- Is it normal for the laptop to produce that sound ?
2- If it is not normal, is it okay to keep using the laptop without any problems except getting used to that sound ?
Here are the solutions I tried so far:
1- Tried windows 7/8 also pirated/original.
2- Muting the mic
3- Turning the wifi off
4- Increasing/Decreasing brightness
5- Turning off the screen but setting brightness to 0
6- Using external monitor with laptop screen on/off
7- Removing keyboard to clearly hear the sound, it appears to be more loud coming from the center of motherboard with some rrrrrrr mixed with zzzzz sound.
Monitoring temperatures shows 46-50C on idle, the laptop is a little hot from the bottom but I suppose that it is normal for a metallic bottom to quickly and effectively conduct heat.
Here is one of the sound: https://drive.google.com/file/d/0B8b6LZuxzffteTFoaU1BNFFsTGs/edit
Another sound: https://drive.google.com/file/d/0B8b6LZuxzfftY2pkTW14VkdOSUE/edit?usp=sharing