I Have a HP ml350 G4 server. I installed windows 2008 standard and everyhting worked well. When I installed 2008 R2 the server just keeps restarting until you get to the safe mode menu. I tried safe mode and it stops at the clsasspnp driver load. I've done a windows repair, memory check, did the the raid5 over and installed new hard drives. Any help would be appreciated.

Please donwload the latest version of HP Smart start which should support Windows 2008 r2 in the base os and give a try the problem whihc you mentioned is usually due to the drivers if still not solved you may contact the HP server forums for more help. http://h30499.www3.hp.com/t5/Servers/ct-p/bsc-429http://www.virmansec.com/blogs/skhairuddin

Yes, you need to update your firmware and BIOS using HP tools. Download the latest updates from the HP web site. Post your query on HP forum. Thanks.