You can try optimizing the system by removing unwanted softwares, like those "Acer" softwares and games.
Keep the startup softwares as minimal as possible.
Defrag your registry and HDD.

Make sure you don't install shitty anti-virus softwares like Mcafee, Kaspersky etc.
These shitty AV softwares will cripple your system.
Make sure you don't start up your windows with MSN, Yahoo chat etc etc.

Thirdly, you can consider faster hybrid HDD or SSD.
The default HDD is a 5400rpm rated HDD, which is slow.

You can uninstall all Acer softwares, except the launch manager.

Trend Micro is one of the worst AV software in crippling your system.

I personally strongly recommend ESET, every fast yet effective AV.
You can check other AV softwares too.
Most AV softwares give you free 30-day trial anyway.