Hi, it's me again, I'm always must be having some issues. I decided to change my old HDD (which had only 252 GB, and about 130 GB left for installing) for new HDD with 500 GB, the storage doesn't matter, but when I connect the new HDD (also internal, but I don't need 2 HDD at a moment, my PSU is old and wouldn't be able to power up to two HDD's) I get to "press F2 to load default values and continue" and then to that booting error with inserting media - "Reboot and select and then press a key". I got my old Windows 7 cd, I was able to boot from it, but I had some problems with installing Win 7. If there's a way how to boot from my old HDD, but actually having my new HDD. The BIOS is from American Megatrends. And if there's a way I don't lose anything on my old HDD and it would be on the new one, it would be cool, but I won't mind. I also tried booting from flash USB, but then it wanted me to "replace the disk and then press a key" at same error with "Reboot and select". I can try to buy the new cables and having two HDD working together, but they are both internal and my PSU probably won't be able to hold it.