My father cleaned my PC (I was watching a movie at that time) and when I turned it on, it said "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key".
I tried pressing F12 and all I could see there was my optical drive and "enter setup".
I went to the BIOS and tried to change the first boot to my HDD but only my optical drive was shown there.
I checked if the HDD was connected to the mobo and it was. But my PC doesn't detect it. I have a Western Digital Caviar Blue 500GB HDD 3700RPM. Please help