I have an older RX300 S2 Primergy. It was not used frequently (still looks new) and hasn't been used at all for the last 5 years. Now when powering up, the fans start turning in high speed and stay like that, but nothing appears on the screen and neither the disk or CD-Rom is able to read the OS - only leds in the drives blink for a short while. Should I replace battery (still shows 2,6 Volt) on the motherboard and reinstall BIOS ? Problem is also that I don't have the Server Start cd-rom any more, but it looks like there is a basic issue as nothing shows on the screen. Any suggestion to try fixing it ?