So i decided to upgrade my pc, and i ended up upgrading everything execpt my hdd hard drive. Once i finished building it, i starter it and tried to get into my old windows. It started to load the windows 7 logo(the loading screen), and then suddenly restarted. I've tryed reinstalling windows 7, it firstly loaded files, then the windows 7 logo came, it went nicely throught and instead of starting the install it opened a cmd prompt over a windows 7 background. Then i tryed installing Windows xp, then it said bootmgr is missing.
I changed absolutley everything, from a intel duo core to amd fx, from nvidia geforce to amd r9.
Is there a way to actualy get it working or should i get my hdd cleaned and/or new one?
Cpu, Intel duo core e8400 > Amd fx 6350
Gpu, Nvidia Geforce 9800gt > Amd r9 270x
Mobo, Asrock G41M-LE(intel g41+ICH7 chipset) > Msi 970A-G43(Amd 970+SB950 chipset)
Psu is a 650w Corsair VS650
Hdd is a Seagate barracuda 7200 500gb