UPDATE

I had an old xp server box laying around, so I took the non-booting hard drive and put it in there, and managed to boot into reatogo from CD. I ran FRST and here’s the log:

Scan result of Farbar Recovery Scan Tool (FRST) (x86) Version: 06-12-2013
Ran by SYSTEM on REATOGO on 09-12-2013 11:34:07
Running from C:
WIN_XP (X86) OS Language: English(US)
Boot Mode: Recovery
Attention: Could not load system hive.

Error: The system was unable to find the specified registry key or value
Attention: System hive is missing.

==================== Registry (Whitelisted) ==================

ATTENTION: Software hive is missing.

ATTENTION: Software hive is not loaded.

========================== Services (Whitelisted) =================

==================== Drivers (Whitelisted) ====================

==================== NetSvcs (Whitelisted) ===================

==================== One Month Created Files and Folders ========

2013-12-09 11:34 - 2013-12-09 11:34 - 00000000 _____ C:\FRST.txt
2013-12-09 11:33 - 2013-12-09 11:33 - 00000000 ____D C:\FRST
2013-12-06 17:52 - 2013-12-06 15:42 - 01058547 _____ (Farbar) C:\FRST.exe

==================== One Month Modified Files and Folders =======

2013-12-09 11:34 - 2013-12-09 11:34 - 00000000 _____ C:\FRST.txt
2013-12-09 11:33 - 2013-12-09 11:33 - 00000000 ____D C:\FRST
2013-12-06 15:42 - 2013-12-06 17:52 - 01058547 _____ (Farbar) C:\FRST.exe

==================== Known DLLs (Whitelisted) ============

==================== Bamital & volsnap Check =================

C:\Windows\explorer.exe IS MISSING <==== ATTENTION!.
C:\Windows\System32\winlogon.exe IS MISSING <==== ATTENTION!.
C:\Windows\System32\svchost.exe IS MISSING <==== ATTENTION!.
C:\Windows\System32\services.exe IS MISSING <==== ATTENTION!.
C:\Windows\System32\User32.dll IS MISSING <==== ATTENTION!.
C:\Windows\System32\userinit.exe IS MISSING <==== ATTENTION!.
C:\Windows\System32\Drivers\volsnap.sys IS MISSING <==== ATTENTION!.

==================== EXE ASSOCIATION =====================

HKLM.….exe: <===== ATTENTION!
HKLM.…\exefile\DefaultIcon: <===== ATTENTION!
HKLM.…\exefile\open\command: <===== ATTENTION!

==================== Restore Points (XP) =====================

==================== Memory info ===========================

Percentage of memory in use: 19%
Total physical RAM: 1022.41 MB
Available physical RAM: 827.84 MB
Total Pagefile: 906.09 MB
Available Pagefile: 805.65 MB
Total Virtual: 2047.88 MB
Available Virtual: 1994.25 MB

==================== Drives ================================

Drive b: (RAMDisk) (Fixed) (Total:0.06 GB) (Free:0.06 GB) NTFS
Drive c: () (Removable) (Total:3.8 GB) (Free:3.8 GB) FAT32
Drive x: (ReatogoPE) (CDROM) (Total:0.43 GB) (Free:0 GB) CDFS
Drive y: () (Removable) (Total:3.8 GB) (Free:3.8 GB) FAT32

==================== MBR & Partition Table ==================

========================================================
Disk: 0 (Size: 4 GB) (Disk ID: 8C6ECB2E)
Partition 1: (Not Active) - (Size=4 GB) - (Type=0B)

==================== End Of Log ============================