Removed OS is "still" there
I have the following problem:
I tried putting Windows 7 (From original CD) to a external hard drive, It didn't let me, so I took the 2,5Inch hard drive out of the external box, and removed the SATA to USB converter and then plugged into my MB. I successfully installed it, but when I removed it from my MB, whenever I start up my PC, I shows me a screen to choose from 2 OS's even though I removed the drive, It is quite annoying and the fact that my Keyboard acts weird in BIOS (If I press Down Arrow to choose the second OS in the list, it just acts like I pressed ENTER) doesn't help it... I tried many things, like Putting the original CD back in, and clicking on "Repair my computer" but It said "Windows could automatically repair the problem, please contact your PC manufacturer" Blah Blah Blah...
Also, don't tell me to contact my PC manufacturer because I built the PC myself xD.
Thanks in advance!