Ok. I have kindof fixed the problem by Installing Windows 10 on my external HD that has 500gb. Now i dont want to live like this forever. BTW Ironfly i have done all of that and that wont work. I am now on my acer with windows installed on the external HD. I was hoping to see my internal HDD on the windows explorer but no success. also checked the device manager and there it says "unknown device" also no hardware ID so i cant look for updates or drivers. Is it just dead and i have to buy a new 1? If yes then which HDD would fit in replacement? I need at least a 500gb internal HDD.
thanks ironfly for replying everytime 
youre the best