Server won't boot - in a bad place

so i've been searching everywhere solutions attempt.  i'm in bad place less 2 days go before vacation going have cancelled. i'm hopeful , thankful today may have ideas. 

brand new dell poweredge server thats 4 months old.  raid 10, 32gb ram, processors.  i have run of dell diagnostics find.  no hardware issues @ all.  nothing being reported in drac @ all.  yesterday morning server running, running slow throughout office.  apparently in office thought idea restart server.  so have no idea going on before that.  the server never came back.  

i tried boot normally. nothing.  i past of dell post , splash screens.  i uefi boot initialization screen.  i see windows logo spinning circle 10 minutes.  it time out , go restore screen.  first thing tried safe mode.  note see activity on drives before attempt reboot in safe mode.  

safe mode yields windows logo no activity.  drives flash 1-3 times, no activity.  no spinning circle under windows logo.  

i've tried boot dvd , repairs, nothing helps.  i tried sfc /scannow /offbootdir=c:/ offwindir=c:\windows , nothing happens.  interesting thing when in command prompt drives showing activity.  

i can browse files fine.  they seem should , in tact.  automatic startup repair doesn't help.  i've tried repairing mbr , boot record.  nothing.  

i have no idea go here.  i have done many repair install on windows os server 2012 r2 different breed uefi , new stuff.  this first attempt @ recovering server.  we have backups offsite , important files (nothing os backed up) per customer request.  i have no problem reloading server issue vacation.  i rather spend day tomorrow troubleshooting , manually repairing things next week reloading os , working entire office.  

anyone have ideas start? in advance , happy thanksgiving!

hi,

thank post.

from description, see current issue windows server 2012 r2 goes restore screen @ boot instead of booting system. please let me know if have misunderstood anything.

currently, let's take following steps check issue.

firstly, let’s try last known configuration (advanced) option see if able boot windows. can press f8 or follow steps below choose last known configuration option.
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1. insert windows server 2012 r2 dvd, choose language , other preferences, , click next.
2. on next page of wizard, click repair computer.

3. on choose option page, click troubleshoot > startup settings.
4. after restarting server, see advanced boot options window.
5. choose last known configuration (advanced) option see if able boot server.

if method above not work, let’s perform following steps replace related hiv file backup hiv file see if works:
===========================
note: the following steps may lose installed services/drivers.

1. boot recovery console
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a. start computer using windows install dvd. 
b. @ welcome setup screen, press r repair installation, , press c start recovery console. 
c. select windows installation want repair, , press enter. 
d. type administrator password, , press enter.
  
2. use backup system registry hiv replace current hiv:
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a. in recovery console.
b. in cmd, go to: %systemroot%\system32\config\
c. run: ren system system.old 
d. go to: %systemroot%\system32\config\regback
e. run: copy %systemroot%\system32\config\regback\system %systemroot%\system32\config
f. restart computer.

3. after that, please try test if server can boot normal mode now.

if issue persists, please run following command in command prompt in recover console disable startup repair automatically booting. 

bcdedit /set {default} recoveryenabled no

then please capture screenshot of error message after disabling startup repair if any.

please let me know if there update. time.

best regards,

sophia sun

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