Well, that's quite it, just installed windows 7 ultimate 64 bits that i downloaded from iso hunt (7600.16385.090713-1255_x64fre_client_en-us_Retail_Ultimate-GRMCULXFRER_EN_DVD.iso) and i did'nt even had time to get problems with authentication because it won't star without the dvd on the drive. When i try to start windows widhout the dvd, it ask me to insert a boot disk or boot from elsewhere, but don't let me boot the os that i installed on my HD. So every time i want to start my pc, i have to get the windows 7 dvd on the drive and boot it, i don't even have to repair it. Tips?
Did you verify the hash of the ISO file? File Name: 7600.16385.090713-1255_x64fre_client_en-us_Retail_Ultimate-GRMCULXFRER_EN_DVD.iso Size: 3224686592 bytes MD5: F43D22E4FB07BF617D573ACD8785C028 SHA-1: 326327CC2FF9F05379F5058C41BE6BC5E004BAA7
Start over, make sure to wipe old/defective bootsector, eg: wipe the partition with the free killdisk or such
Found the problem! I just bought this pc, the bios was set to boot from the dvd driver as 1st option. Feeling like like a child here, lucky that i didn't installed all over again.