I can't say if this will work for proprietary systems but often a full Windows installation disk of the same version will do some repairs on brand name systems. Otherwise, you may need to contact Dell.
i'm mani...hi to eveyone ...pls help me...I'm using Dell Inspiron N4110 model laptop,with configuration of i5-Processor,8GB RAM,
64-Bit,Windows-7 Home premium with good condition.The problem is "BOOT MGR" missing during startup,& "Safemode Command Promt" doesnt works
Actually what happenend means during windows updates unfortunately i closed the laptop.thereafter when restart the system at next day,its couldn't startup.directly went to Windows REPAIRING,few minutes latter
its shown this following msg.i could not go to anyother mode-(safe mode,safe mode command,anyothers)
Problem Signature
Problem Event Name: StartupRepairOffline
Problem Signature 01: 6.1.7600.16385
Problem Signature 02: 6.1.7600.16385
Problem Signature 03: unknown
Problem Signature 04: 21201049
Problem Signature 05: AutoFailover
Problem Signature 06: 7
Problem Signature 07: CorruptRegistry
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1033
so i did bootup from my Backup OS-CD(windows 7 Home Premium-64 bit)
and completed my reinstallation successfully. after that When i restart the system,
Its shows"BOOTMGR MISSING", Then i inserted my OS installation-CD - RESTARTED-i pressed "F8" - and choose any mode(Safe mode,or safe with command or starts windows normally) Windows logo is apear,its load somedrivers in blackscreen.then its shows "DELL DATA SAFE recovery WINDOW" only OPEN .its has 2 options-
1) To start to boot from Harddisc
2) To reinstall backup from LOCAL disc
if i choose one-then display "BOOTMGR MISSING "
If i choose two-then its ASK again os installation-
pls help What should i do-Safe mode Command promt-wont works...

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic