Hola @Chaka_Ck
Tu comentas que no tienes mucho instalado, y yo veo que si tienes muchos programas en tu equipo, a saber:
Adobe Acrobat Reader DC - Español (HKLM-x32\...\{AC76BA86-7AD7-1034-7B44-AC0F074E4100}) (Version: 19.021.20056 - Adobe Systems Incorporated)
ASUS Power4Gear Hybrid (HKLM\...\{9B6239BF-4E85-4590-8D72-51E30DB1A9AA}) (Version: 3.0.8 - ASUS)
ASUS USB Charger Plus (HKLM-x32\...\{A859E3E5-C62F-4BFA-AF1D-2B95E03166AF}) (Version: 3.1.9 - ASUS)
ATK Package (HKLM-x32\...\{AB5C933E-5C7D-4D30-B314-9C83A49B94BE}) (Version: 1.0.0036 - ASUS)
Avast Free Antivirus (HKLM-x32\...\Avast Antivirus) (Version: 19.8.2393 - AVAST Software)
BaseX (HKLM-x32\...\BaseX) (Version: - BaseX GmbH)
BiglyBT (HKLM\...\0112-2557-8304-7048) (Version: 1.9.0.0 - Bigly Software)
Bonjour (HKLM\...\{E4F5E48E-7155-4CF9-88CD-7F377EC9AC54}) (Version: 2.0.4.0 - Apple Inc.)
CCleaner (HKLM\...\CCleaner) (Version: 5.61 - Piriform)
Classic Shell (HKLM\...\{383BB30A-B4A7-4666-9A83-22CFA8640097}) (Version: 4.3.0 - IvoSoft)
Flashtool (HKLM-x32\...\Flashtool) (Version: 0.9.25.0 - Androxyde)
GlassFish Server Open Source Edition 4.1 (HKLM\...\nbi-glassfish-mod-4.1.0.13.0) (Version: - )
GlassFish Server Open Source Edition 4.1.1 (HKLM\...\nbi-glassfish-mod-4.1.1.0.1) (Version: - )
Google Chrome (HKLM-x32\...\Google Chrome) (Version: 78.0.3904.108 - Google LLC)
Google Update Helper (HKLM-x32\...\{60EC980A-BDA2-4CB6-A427-B07A5498B4CA}) (Version: 1.3.35.341 - Google LLC) Hidden
Intel(R) Dynamic Platform and Thermal Framework (HKLM-x32\...\FFD10ECE-F715-4a86-9BD8-F6F47DA5DA1C) (Version: 7.1.0.2105 - Intel Corporation)
Intel(R) Management Engine Components (HKLM-x32\...\{65153EA5-8B6E-43B6-857B-C6E4FC25798A}) (Version: 9.6.0.1038 - Intel Corporation)
Intel(R) Processor Graphics (HKLM-x32\...\{F0E3AD40-2BBD-4360-9C76-B9AC9A5886EA}) (Version: 10.18.14.4062 - Intel Corporation)
Intel® Hardware Accelerated Execution Manager (HKLM\...\{754CC9DC-3DB4-4FB2-B71E-87331DB9EA17}) (Version: 7.5.4 - Intel Corporation)
Java 8 Update 231 (64-bit) (HKLM\...\{26A24AE4-039D-4CA4-87B4-2F64180231F0}) (Version: 8.0.2310.11 - Oracle Corporation)
Java SE Development Kit 8 Update 211 (64-bit) (HKLM\...\{64A3A4F4-B792-11D6-A78A-00B0D0180211}) (Version: 8.0.2110.12 - Oracle Corporation)
Java SE Development Kit 8 Update 231 (64-bit) (HKLM\...\{64A3A4F4-B792-11D6-A78A-00B0D0180231}) (Version: 8.0.2310.11 - Oracle Corporation)
Microsoft .NET Framework 1.1 (HKLM-x32\...\{CB2F7EDD-9D1F-43C1-90FC-4F52EAE172A1}) (Version: 1.1.4322 - Microsoft)
Microsoft Office Profesional Plus 2016 - es-es (HKLM\...\ProPlusRetail - es-es) (Version: 16.0.12130.20272 - Microsoft Corporation)
Microsoft OneDrive (HKU\.DEFAULT\...\OneDriveSetup.exe) (Version: 18.151.0729.0013 - Microsoft Corporation)
Microsoft Silverlight (HKLM\...\{89F4137D-6C26-4A84-BDB8-2E5A4BB71E00}) (Version: 5.1.50918.0 - Microsoft Corporation)
Microsoft Visual C++ 2005 Redistributable (x64) (HKLM\...\{071c9b48-7c32-4621-a0ac-3f809523288f}) (Version: 8.0.56336 - Microsoft Corporation)
Microsoft Visual C++ 2005 Redistributable (x64) (HKLM\...\{ad8a2fa1-06e7-4b0d-927d-6e54b3d31028}) (Version: 8.0.61000 - Microsoft Corporation)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.17 (HKLM-x32\...\{9A25302D-30C0-39D9-BD6F-21E6EC160475}) (Version: 9.0.30729 - Microsoft Corporation)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161 (HKLM-x32\...\{9BE518E6-ECC6-35A9-88E4-87755C07200F}) (Version: 9.0.30729.6161 - Microsoft Corporation)
Microsoft Visual C++ 2010 x64 Redistributable - 10.0.40219 (HKLM\...\{1D8E6291-B0D5-35EC-8441-6616F567A0F7}) (Version: 10.0.40219 - Microsoft Corporation)
Microsoft Visual C++ 2013 Redistributable (x86) - 12.0.30501 (HKLM-x32\...\{f65db027-aff3-4070-886a-0d87064aabb1}) (Version: 12.0.30501.0 - Microsoft Corporation)
Microsoft Visual C++ 2013 Redistributable (x86) - 12.0.40660 (HKLM-x32\...\{61087a79-ac85-455c-934d-1fa22cc64f36}) (Version: 12.0.40660.0 - Microsoft Corporation)
Microsoft Visual C++ 2015 Redistributable (x64) - 14.0.24212 (HKLM-x32\...\{323dad84-0974-4d90-a1c1-e006c7fdbb7d}) (Version: 14.0.24212.0 - Microsoft Corporation)
MySQL Connector J (HKLM-x32\...\{D2B7A080-0321-4543-80C1-3216B5A0B703}) (Version: 8.0.16 - Oracle Corporation)
NetBeans IDE 8.0.2 (HKLM\...\nbi-nb-base-8.0.2.0.201411181905) (Version: 8.0.2 - NetBeans.org)
NetBeans IDE 8.2 (HKLM\...\nbi-nb-base-8.2.0.0.201609300101) (Version: 8.2 - NetBeans.org)
Notepad++ (64-bit x64) (HKLM\...\Notepad++) (Version: 7.8.1 - Notepad++ Team)
Office 16 Click-to-Run Extensibility Component (HKLM\...\{90160000-008C-0000-1000-0000000FF1CE}) (Version: 16.0.12130.20272 - Microsoft Corporation) Hidden
Office 16 Click-to-Run Licensing Component (HKLM\...\{90160000-007E-0000-1000-0000000FF1CE}) (Version: 16.0.12130.20272 - Microsoft Corporation) Hidden
Office 16 Click-to-Run Localization Component (HKLM\...\{90160000-008C-0C0A-1000-0000000FF1CE}) (Version: 16.0.12130.20272 - Microsoft Corporation) Hidden
Oracle Database 11g Express Edition (HKLM\...\{05A7B662-80A3-4EB9-AE1D-89A62449431C}) (Version: 11.2.0 - Oracle Corporation) Hidden
Oracle Database 11g Express Edition (HKLM-x32\...\InstallShield_{05A7B662-80A3-4EB9-AE1D-89A62449431C}) (Version: 11.2.0 - Oracle Corporation)
Oracle VM VirtualBox 6.0.14 (HKLM\...\{8E519428-0DC5-4A01-818A-73155A0AF8AF}) (Version: 6.0.14 - Oracle Corporation)
Package Management Preview - x64 (HKLM\...\{57E5A8BB-41EB-4F09-B332-B535C5954A28}) (Version: 10.0.10586.117 - Microsoft Corporation)
Paquete de controladores de Windows - Intel (dptf_cpu) DPTF (06/10/2014 8.0.10002.14) (HKLM\...\9E3CD3B31C270EDDA743FE75C852D7F7461AAFA9) (Version: 06/10/2014 8.0.10002.14 - Intel)
Paquete de controladores de Windows - Intel (dptf_pch) DPTF (06/10/2014 8.0.10002.14) (HKLM\...\E42B67B2E1C4A8F6D9EC28EF397D17FC1A2B609E) (Version: 06/10/2014 8.0.10002.14 - Intel)
Paquete de controladores de Windows - Intel Corporation (iaStorA) HDC (11/04/2015 14.8.0.1042) (HKLM\...\34C461BD099454731CD5F260D009E37CD73324C2) (Version: 11/04/2015 14.8.0.1042 - Intel Corporation)
Paquete de controladores de Windows - INTEL System (01/26/2016 10.1.1.14) (HKLM\...\F810619F526C142F3DCF5DCDC76206FF6606610C) (Version: 01/26/2016 10.1.1.14 - INTEL)
Paquete de controladores de Windows - Intel USB (07/31/2013 9.4.0.1025) (HKLM\...\A6995A77D26D0B0292A9C3B4878836D232899FE0) (Version: 07/31/2013 9.4.0.1025 - Intel)
Paquete de controladores de Windows - Polar Electro Oy (usbser) Ports (03/12/2015 6.0.2600.5) (HKLM\...\4C9F407EFEE71D7ED12BA7F50C69857CD776B651) (Version: 03/12/2015 6.0.2600.5 - Polar Electro Oy)
Paquete de controladores de Windows - Qualcomm Atheros Communications Inc. (athr) Net (03/16/2017 10.0.0.351) (HKLM\...\3981195531AFF4F7360EB83185EBC891B91C782D) (Version: 03/16/2017 10.0.0.351 - Qualcomm Atheros Communications Inc.)
Paquete de controladores de Windows - Realtek (RTL8168) Net (04/22/2016 8.046.0422.2016) (HKLM\...\C057B88199BB23C38BDB8BB730D27B11A38B3CF8) (Version: 04/22/2016 8.046.0422.2016 - Realtek)
Paquete de controladores de Windows - Realtek Semiconductor Corp. HD Audio Driver (06/14/2017 6.0.1.8186) (HKLM\...\EE5A9E8ACD50E6C7F4226D29D517454E1898352A) (Version: 06/14/2017 6.0.1.8186 - Realtek Semiconductor Corp.)
Polar FlowSync versión 3.0.0.1337 (HKLM-x32\...\{A1538F5C-7B65-4DB6-9FFB-FFC0DF2E85D8}_is1) (Version: 3.0.0.1337 - Polar Electro Oy)
PostgreSQL 9.5 (x86) (HKLM-x32\...\PostgreSQL 9.5) (Version: 9.5 - PostgreSQL Global Development Group)
Qualcomm Atheros Client Installation Program (HKLM-x32\...\{28006915-2739-4EBE-B5E8-49B25D32EB33}) (Version: 10.0 - Qualcomm Atheros)
Ralink RT2860 Wireless LAN Card (HKLM-x32\...\{8FC4F1DD-F7FD-4766-804D-3C8FF1D309B0}) (Version: 5.0.46.0 - Ralink)
Realtek Card Reader (HKLM-x32\...\{5BC2B5AB-80DE-4E83-B8CF-426902051D0A}) (Version: 6.2.9200.21236 - Realtek Semiconductor Corp.)
Realtek Ethernet Controller Driver (HKLM-x32\...\{8833FFB6-5B0C-4764-81AA-06DFEED9A476}) (Version: 8.29.314.2014 - Realtek)
Realtek High Definition Audio Driver (HKLM-x32\...\{F132AF7F-7BCA-4EDE-8A7C-958108FE7DBC}) (Version: 6.0.1.8186 - Realtek Semiconductor Corp.)
Servicio Xperia Companion (HKLM\...\{ED9C6E7D-FA20-4FA0-BC6E-3D05703B03C5}) (Version: 2.7.4.0 - Sony) Hidden
VLC media player (HKLM\...\VLC media player) (Version: 3.0.8 - VideoLAN)
Windows Driver Package - ASUS (ATP) Mouse (05/14/2014 1.0.0.219) (HKLM\...\FDEE821D736774A5824C3D7701C8423487401A6D) (Version: 05/14/2014 1.0.0.219 - ASUS)
WinFlash (HKLM-x32\...\{8F21291E-0444-4B1D-B9F9-4370A73E346D}) (Version: 2.42.0 - ASUS)
WinRAR 5.71 (64-bit) (HKLM\...\WinRAR archiver) (Version: 5.71.0 - win.rar GmbH)
XAMPP (HKLM-x32\...\xampp) (Version: 7.3.5-0 - Bitnami)
Xperia Companion (HKLM-x32\...\{dd23851d-6b5f-4299-9299-7fa29040d157}) (Version: 2.7.4.0 - Sony)
Xperia Companion (HKLM-x32\...\{E1C58CBB-69AA-4E5F-B464-8A633811D4BC}) (Version: 2.7.4.0 - Sony) Hidden
No solo los programas ocupan espacio, también hay Drivers, Actualizaciones, etc.
Revisa todo el listado que te deje y dime si reconoces todos los que son programas.
Luego:
Descarga SpaceSniffer
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Al iniciarlo, selecciona tu disco duro C: y espera a que termine de analizarlo. (abajo a la izquierda pondrá Master status: Scanning… mientras está analizándolo y arriba el porcentaje del proceso)
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Una vez que termine, nos subes una captura de pantalla de la ventana del programa.
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Así podremos ver toda la estructura de tu disco duro, y qué carpetas son las que ocupan más espacio, para averiguar dónde está el problema.
Salu2