Wont boot and keeps locking up

[Ayman Altounji]

I have Proliant 800 running netware 4.11 SP9. I have had numerous problems when server abends and I try to restart it, I get a power light on the system but it doesnt boot or gets stuck right before checking SCSI devices. After attempting many times it finally boots up (should be corrupted memory/motherboard). Last week the system started locking up and I get redirected blocks (which would be hard drive problems) and "Work object took over one minute to process" errors. Also was getting many CPU hog errors then abends. The system usually just locks up and I have to either wait for it to respond or reboot. I have ordered new memory. Not sure what else to do.