Hi,I have a Acer aspire AX1200-U1711A desktop.It is about 1yr and a couple months old. I bought it with no hard drive ,i put a new hard drive in it ,and has sticker on side of computer Windows Vista Home .I sent for discs from Acer with ID number and they sent 1 system and 2 recovery disc.I tap f-12 and follow steps put each disc in and last disc gets to 90% and says error 0xd000000a and then says crlt-alt-delete to start again,pops up screen safe mode ,safe mode with networking and so on . Do i need a vista operator system to install,or does those discs have that in them,Please help. Thanks