alphaserver DS15

[NDC_Nahidh]

Plasea Sir
can you help me solve this problem
I have server alphaServer DS15  generation4 ,
its operating system is  true unix64,
when turning it on the system can not but with this error:
 
(boot dka0.0.0.8.0 -flag A)
block 0 of dka0.0.0.8.0 is a valid boot block
reading 19 blocks from dka0.0.0.8.0
bootstrap code read in
base = 2be000, image_start = 8, image_bytes = 2600
initializing HWRPB at 2000
initializing page table at 3fff0000
initializing machine state
setting affinity to the primary cpu
jumping to bootstrap code
 halted cpu 0
halt code = 2
kernal stack not valid halt
pc = 0
boot failure
>>>

[NDC_Nahidh]

Dear Sir

I do not have the (tru64 installation) where could i find acopy  

and

can you help me the link to download

And also do not want to lose the lisecenss to my software operarting system

Thank you for your cooperation