Hi,   PE1800 is very simple server yet very old.    It does seem to be a main board failure. Does it have any beeping sound when you turn it on, or just fan spinning?   Remove all components except these below, then leave the server connected to the power without turning on for a day or less. Say, 4hours. Then try turning on. If it does not have any display, or any beeping sound, it's a mainboard failure.   •System Board•One Processor•One stick of memory in DIMM1_A•Power supply (PSDB if redundant)•Control panel and cable (power button - only required if the last power state was Off)
Hello i have a leftover power edge server that was given to me years ago, and id love to get it working. it has a raid controller, 1gb ram, a tape drive and a drive array of 6gb? scsi drives. the problem is i cant get it to setup / bios it gives me the 'invalid configuration please run setup' but when i click f2 it never gets to the bios. i replaced the 2032 battery, still does the same i unplugged the drive array board, the cdrom, the tape drive, pulled the raid controller out, pulled one stick of ram, still same few things when i plug it in it sometimes turns on right away, even without pressing power. sometimes when i shut it down and turn it back on right away the monitor wont detect input. if i cut power and wait a minute it comes back on fine. any ideas on what to try next?  
Poweredge 1800 freezes while trying to get to bios