Ascer Aspire Freezes And Not Doing Anything

I'm having with my Acer Aspire, run on Windows 7. So here's the problem, about a couple months ago, I went to go onto my computer, turned it on, and I noticed it was acting a bit slow, so as I go to click on the internet, it freezes up. And I wait for it for a good ten minutes to see if it will do anything, but no. So I was forced to crash it. I turn it back on, and it does the same thing! It was very frustrating. So I used "Safe Mode with Networking" so I could do all my basic internet stuff. But I tried to go back on regular and see if I could create a restore point. It restarted and everything fine, but only for about ten minutes. And I've tried and tried to do it again, and I just can't take it anymore! I don't have the money to have anyone fix it. I just need some help. I don't know what's wrong with it. This problem happens all the time, not just for the internet, but any program. I would just like to be able to use my computer on normal mode INSTEAD of safe mode. Safe mode is so annoying, big giant screen, no sound, unable to use half of my programs, including my Zune software. I cannot even update my Zune MP3 player because safe mode won't read it. Also, the disk drive doesn't even work.