I prefer to do a clean install . as a OEM Builder , I build high end AMD Computers , water cooled , max on ram , my boards will tale 32 gig of ram , 6 hard drives , 2 SSD in raid 0 , 120 . 6 others. For some reason it does not like ,in raid . For some reason it does not WIN 10. Most of my computers are AMD. I have a friend that had HP G60 . I gave her my 6 month HP with A AMD duel core , 15 in. I took over the computer , tried to up date to 7 Allotment & it did not like ether It has a 4100 INTELL chip 2mgs . it could come from HP 7 or 8 , It likes 10 . the graphics are not good they are 4500 INTELL , sorry they should stay away from VIDEO cards.