Hello

When i turn on the IPC427D only the yellow led flashes and nothing else happens on the screen.

How could you help me out?

Hello Messbb,

LEDs indicate the status of the device. See PDF page 19 of the IPC427D operating manual at https://support.industry.siemens.com/cs/ww/en/view/67235073.

The only yellow flashing LED is the PC ON/WD LED and it is supposed to flash green/yellow. If you saw this behavior then your IPC is in POST (power on self test). The IPC checks it's components. This typically doesn't last longer than a couple of seconds.

Maybe you should consider asking the support for further assistance. 

The Siemens Technical Support page is here:
https://support.industry.siemens.com/cs/ww/en/sc/4868

regards,
xnor