So yesterday i installed a solid state hard drive and my problem disapeared. Everything runs MUCH smoother. No more freezing. The funny thing was it was not even the entire MT4 that would freeze - only the candles/price movement. Everything boots up super fast. If anyone is interested I purchased the: Crucial MX200 250 GB SATA 6Gb/s 2.5" Internal SSD from the crucial website (about $102). It comes with a software (acronis) to clone your current HD. If you do not have 2 bays, then you can clone it externaly with a usb cable from Crucial or if you have another device (I used a thermaltake Blacx ) I did not need a larger HD as this computer is used only for trading but it comes in larger sizes. There are many setttings in the acronis software. I went to "tools and utilities" then chose "clone disk". Then you pick the source and destination disks and continue and that's it! No problem with windows being recognized. Hope this all helps someone. Thanks for your time.
Please stop arguing against WHRoeder and just try to post better answer if you can.