Cleanmem is here, direct download link is at the bottom of the page
http://www.pcwintech.com/cleanmem4 Gb of used memory is actually a lot. While you have plenty of memory left I am running on a system with 12 Gb of memory, 70 processes in the back ground and I am barley using 2 GB of memory. So if you have something using up that much memory there is a good chance it has a memory leak and Windows is using the page file a bit.
For the cookies you may need to empty them all as well in case there is a bad or corrupt cookie causing the problem.
As for the the auto correct, that would be a setting in IE but I have to look up where. IE isnt the best browser, if you are willing give firefox or chrome a try, I myself use firefox.
As for the speakers, it is possible it is a lose connection or just a bad wire. Laptops can be a pain taking apart, it is like a jiz saw puzzle lol
But before you go through that hassle you could do one thing to confirm it is the speakers and not something odd in Windows. Reason why I say that is a lot of times Windows has a way to detect if you plug in head phones, the sound card reports it and Windows may simply think the speakers are not plugged in when they are. To test this we simply need to use a different operating system and see if they work. And of course we dont want to go and reinstall the OS, so what I do is download the Ubunut Linux iso file and then use their USB tool and make a USB thumb drive bootable with it. You can run Ubuntu right off of it instead of installing and then you can see if the sound works in ubuntu. If it does then we know the speakers are fine, if sound doesnt work then we know it is the speakers
You can download Ubuntu here
http://www.ubuntu.com/download/desktop/thank-you/?version=14.04&architecture=amd64And then the USB tool here
http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-windowsNow, on the number of processes running in the back ground. The trick is to simply disable them from startup, the programs will still be installed
Go to the start button and in the search put in
msconfig
When you open it go to the services tab, but a check to hide Microsoft services and then uncheck any service you think you dont need running. Then click on the startup tab and uncheck each program you dont think you need to be loading up at startup. Hit apply and when you reboot you should have a much better boot time since so much less is loading.
The programs are still installed, you just disabled them starting at startup
Shane