Hello

Here is the contents of the scan:
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OTL logfile created on: 28-Dec-11 12:16:30 AM - Run 1
OTL by OldTimer - Version 3.2.31.0 Folder = C:\Users\Wai Meng\Desktop
64bit- Home Premium Edition (Version = 6.1.7600) - Type = NTWorkstation
Internet Explorer (Version = 9.0.8112.16421)
Locale: 00000409 | Country: United States | Language: ENU | Date Format: dd-MMM-yy
3.75 Gb Total Physical Memory | 2.70 Gb Available Physical Memory | 71.89% Memory free
7.50 Gb Paging File | 6.25 Gb Available in Paging File | 83.41% Paging File free
Paging file location(s): ?:\pagefile.sys [binary data]
%SystemDrive% = C: | %SystemRoot% = C:\Windows | %ProgramFiles% = C:\Program Files (x86)
Drive C: | 465.56 Gb Total Space | 425.71 Gb Free Space | 91.44% Space Free | Partition Type: NTFS
Drive D: | 74.53 Gb Total Space | 67.74 Gb Free Space | 90.89% Space Free | Partition Type: NTFS
Drive E: | 291.26 Gb Total Space | 25.78 Gb Free Space | 8.85% Space Free | Partition Type: NTFS
Computer Name: 4CS5681V-PC | User Name: Wai Meng | Logged in as Administrator.
Boot Mode: Normal | Scan Mode: Current user | Include 64bit Scans
Company Name Whitelist: Off | Skip Microsoft Files: Off | No Company Name Whitelist: On | File Age = 30 Days
========== Custom Scans ========== < MD5 for: CNTRTEXTINSTALLER.DLL >
[2011-04-09 14:59:59 | 000,171,008 | ---- | M] (Microsoft Corporation) MD5=0C81B15EADA23F221D01B22D4289C6F2 -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17592_none_672ce6c3de2cb17f\CntrtextInstaller.dll
[2009-07-14 10:43:03 | 000,143,872 | ---- | M] (Microsoft Corporation) MD5=27E7CE50F148311E23F77A0A057D087D -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7600.16385_none_0935b76c289e0fd5\CntrtextInstaller.dll
[2009-07-14 10:43:03 | 000,143,872 | ---- | M] (Microsoft Corporation) MD5=27E7CE50F148311E23F77A0A057D087D -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17514_none_0b66cb34258c936f\CntrtextInstaller.dll
[2011-04-09 13:57:09 | 000,143,872 | ---- | M] (Microsoft Corporation) MD5=9CA5B5A06D5FB95DF9EBEAD24E7E346E -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17592_none_0b0e4b4025cf4049\CntrtextInstaller.dll
[2009-07-14 09:40:21 | 000,170,496 | ---- | M] (Microsoft Corporation) MD5=EB82709B3C30E727F40BC0C2E56C6D97 -- C:\Windows\SysNative\AdvancedInstallers\CntrtextInstaller.DLL
[2009-07-14 09:40:21 | 000,170,496 | ---- | M] (Microsoft Corporation) MD5=EB82709B3C30E727F40BC0C2E56C6D97 -- C:\Windows\winsxs\amd64_microsoft-windows-p..ncecounterinstaller_1122334455667788_6.1.7600.16385_none_92c5129cb38bb828\CntrtextInstaller.DLL
[2009-07-14 10:55:01 | 000,170,496 | ---- | M] (Microsoft Corporation) MD5=EB82709B3C30E727F40BC0C2E56C6D97 -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7600.16385_none_655452efe0fb810b\CntrtextInstaller.dll
[2009-07-14 10:55:01 | 000,170,496 | ---- | M] (Microsoft Corporation) MD5=EB82709B3C30E727F40BC0C2E56C6D97 -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17514_none_678566b7ddea04a5\CntrtextInstaller.dll
< MD5 for: SMIENGINE.DLL >
[2009-07-14 10:43:03 | 000,697,344 | ---- | M] (Microsoft Corporation) MD5=0033FB2E0DEE2EB1BA49CD1D0C2D86A8 -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7600.16385_none_0935b76c289e0fd5\smiengine.dll
[2011-04-09 13:57:31 | 000,697,856 | ---- | M] (Microsoft Corporation) MD5=3B3D283C5A6524E7CD2E02EDCF93A5E9 -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17592_none_0b0e4b4025cf4049\smiengine.dll
[2010-11-20 04:21:24 | 000,697,344 | ---- | M] (Microsoft Corporation) MD5=4648726F4D5078A09B8FEE20708192B1 -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17514_none_0b66cb34258c936f\smiengine.dll
[2010-11-20 21:27:25 | 000,933,376 | ---- | M] (Microsoft Corporation) MD5=4BE691DE828BFC1CB1EBBC767586D73A -- C:\Windows\SoftwareDistributionOld\Download\488053cdbca3231eeb2c2af7236d09ed\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17514_none_678566b7ddea04a5\smiengine.dll
[2010-11-20 21:27:25 | 000,933,376 | ---- | M] (Microsoft Corporation) MD5=4BE691DE828BFC1CB1EBBC767586D73A -- C:\Windows\SoftwareDistributionOld\Download\488053cdbca3231eeb2c2af7236d09ed\amd64_microsoft-windows-smi-engine_31bf3856ad364e35_6.1.7601.17514_none_f63b350329826c41\SmiEngine.dll
[2010-11-20 05:27:26 | 000,933,376 | ---- | M] (Microsoft Corporation) MD5=4BE691DE828BFC1CB1EBBC767586D73A -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17514_none_678566b7ddea04a5\smiengine.dll
[2011-04-09 15:00:20 | 000,933,376 | ---- | M] (Microsoft Corporation) MD5=C5D0AEC12FED8323E1AE2E40C129F2D6 -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17592_none_672ce6c3de2cb17f\smiengine.dll
[2009-07-14 09:41:54 | 000,933,376 | ---- | M] (Microsoft Corporation) MD5=F0324AE96A52B3CD98C57D0B73CE1439 -- C:\Windows\SysNative\SmiEngine.dll
[2009-07-14 10:55:01 | 000,933,376 | ---- | M] (Microsoft Corporation) MD5=F0324AE96A52B3CD98C57D0B73CE1439 -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7600.16385_none_655452efe0fb810b\smiengine.dll
[2009-07-14 09:41:54 | 000,933,376 | ---- | M] (Microsoft Corporation) MD5=F0324AE96A52B3CD98C57D0B73CE1439 -- C:\Windows\winsxs\amd64_microsoft-windows-smi-engine_31bf3856ad364e35_6.1.7600.16385_none_f40a213b2c93e8a7\SmiEngine.dll
< MD5 for: WMICMIPLUGIN.DLL >
[2010-11-02 13:24:56 | 000,524,288 | ---- | M] (Microsoft Corporation) MD5=4733A647FF39563E6FA48576ED542464 -- C:\Windows\winsxs\amd64_microsoft-windows-wmi-cmiplugin_31bf3856ad364e35_6.1.7600.20830_none_19b2311b5eb25d5b\wmicmiplugin.dll
[2009-07-14 10:43:04 | 000,349,184 | ---- | M] (Microsoft Corporation) MD5=57CB8BF1EFB42DE4014351F1FA15B3B5 -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7600.16385_none_0935b76c289e0fd5\wmicmiplugin.dll
[2009-07-14 10:55:04 | 000,521,728 | ---- | M] (Microsoft Corporation) MD5=658942468E3EC8E79AF23D93553A3EA9 -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7600.16385_none_655452efe0fb810b\wmicmiplugin.dll
[2009-07-14 09:41:56 | 000,521,728 | ---- | M] (Microsoft Corporation) MD5=658942468E3EC8E79AF23D93553A3EA9 -- C:\Windows\winsxs\amd64_microsoft-windows-wmi-cmiplugin_31bf3856ad364e35_6.1.7600.16385_none_18f77e8e45b8d35d\wmicmiplugin.dll
[2010-11-20 04:21:38 | 000,351,232 | ---- | M] (Microsoft Corporation) MD5=6ADA78F0E4BE07CF7C5500778DE8FB7D -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17514_none_0b66cb34258c936f\wmicmiplugin.dll
[2010-11-20 05:27:30 | 000,524,288 | ---- | M] (Microsoft Corporation) MD5=8C32BB83B959B38442140CB6EA680CB9 -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17514_none_678566b7ddea04a5\wmicmiplugin.dll
[2011-04-09 13:57:37 | 000,351,232 | ---- | M] (Microsoft Corporation) MD5=9D835C868114E3445E427DE83E0C7ACA -- C:\Windows\winsxs\x86_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17592_none_0b0e4b4025cf4049\wmicmiplugin.dll
[2010-11-20 21:27:28 | 000,524,288 | ---- | M] (Microsoft Corporation) MD5=9F4EA339FD6315CBDC4E543B2A222F45 -- C:\Windows\SoftwareDistribution\Download\488053cdbca3231eeb2c2af7236d09ed\amd64_microsoft-windows-wmi-cmiplugin_31bf3856ad364e35_6.1.7601.17514_none_1b28925642a756f7\wmicmiplugin.dll
[2010-11-20 21:27:28 | 000,524,288 | ---- | M] (Microsoft Corporation) MD5=9F4EA339FD6315CBDC4E543B2A222F45 -- C:\Windows\SoftwareDistributionOld\Download\488053cdbca3231eeb2c2af7236d09ed\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17514_none_678566b7ddea04a5\wmicmiplugin.dll
[2010-11-20 21:27:28 | 000,524,288 | ---- | M] (Microsoft Corporation) MD5=9F4EA339FD6315CBDC4E543B2A222F45 -- C:\Windows\SoftwareDistributionOld\Download\488053cdbca3231eeb2c2af7236d09ed\amd64_microsoft-windows-wmi-cmiplugin_31bf3856ad364e35_6.1.7601.17514_none_1b28925642a756f7\wmicmiplugin.dll
[2011-04-09 15:00:23 | 000,524,288 | ---- | M] (Microsoft Corporation) MD5=A6970CA5C47EDC752FCDE8A976B1F380 -- C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.1.7601.17592_none_672ce6c3de2cb17f\wmicmiplugin.dll
[2010-11-02 13:18:17 | 000,524,288 | ---- | M] (Microsoft Corporation) MD5=B4ED6376DB9BD6FF8B108F37DDAB1C90 -- C:\Windows\SysNative\wmicmiplugin.dll
[2010-11-02 13:18:17 | 000,524,288 | ---- | M] (Microsoft Corporation) MD5=B4ED6376DB9BD6FF8B108F37DDAB1C90 -- C:\Windows\winsxs\amd64_microsoft-windows-wmi-cmiplugin_31bf3856ad364e35_6.1.7600.16699_none_18f0b57c45bd4c1f\wmicmiplugin.dll
< End of report >
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Hmm, the only sort of backup I am able to do is onto another separate HDD (I don't have any external hard drives

). However, the computer is mostly for leisure and casual use so important data is pretty much negligible.
Most of the files that I intend to keep are already on another HDD separate from the drive the OS is installed on (they're Drives D and E, just FYI).