If you tried installing from a USB flash drive, that eliminates a bad CD/DVD drive (which I have seen cause it). Did you also INITIALIZE the RAID 1 after creating it?  If not, you must. However, your problem lies almost surely with the memory/battery message: Is the LCD amber, scrolling a message about the battery voltage? If so:Then the battery needs to be replaced.  This should not be causing the issues with OS installation though. If not:If the LCD is blue and you are getting the memory/battery message on every reboot, then the RAID memory DIMM is bad and must be replaced before your system will function normally.  If you already had an OS installed, it would likely fail to boot, LOOKING like corrupt or missing files, but all attempts to repair would fail; once the DIMM was replaced, it would boot normally again - or allow you to repair the OS, if it was also actually damaged. Options: If you want RAID, then you must replace the RAID DIMM first. If you don't care about RAID, then you can remove the RAID components (DIMM, battery, key), and install in SCSI mode.  
Hi all, Hoping you can help me out. I purchased a used PE 2850 for a test server. It has a Perc 4e/Di which I found the drivers for so I could install Win 2008 R2 from MSDN. However when I get to the install, I create a partition on a RAID 1 between 2x73gb drives and click next. It gets through the "Copying Windows Files" step in only a matter of seconds but then goes to the expanding files stage and sits at 0-1% for a few minutes before kicking out "Windows cannot finish install". Error 0x8007045D. The server is currently running A07 firmware. From my research that appears to be a bad burn but I can't tell you how many copies I burned at different speeds and mediums. I also tried a USB install and that failed at the same part. I also tried a Win Server 2K3 install which failed at 2% and Unbuntu Server which failed just after creating a partition. I'm thinking it could be the hard drives (6 x 73gb Seagates) but I have swapped a few each time then recreated the RAID with the same exact problem. I've been using a RAID 1 config for the two drives on channel 0. One other thing to note is that I get the Memory/Battery error for the raid controller. I was thinking it is battery that was probably dead and haven't given that much thought that it could be causing this problem but worth noting. Any other thoughts? How can I run a checkdisk on the drives? Everything is wiped from this computer including the Utility partition.  Thanks in advance, I can't waste any more hours without some help.
Dell 2850 0x8007045D Error On Install