I am new to SAP and ABAP systems. I have downloaded the You can download the Netweaver 2004s preview right here on SDN and installed on windows XP home sp2. I also installed the SAPGUI. Installation went on without any problem. I tried starting the SAP system through MMC control but the SAP system and the SAPDB has YELLOW COLOR. It does not give any error but i read on the system that YELLOW color means critical condition. I am aslo unable to connect the R/# system through the SAPGUI login.