Hola, soy nuevo en esto de las pc, solo tengo 14 anios

Hola necesito ayuda, me acabaron de regalar una toshiba P755 Intel Core i5 - 6gb RAM
Solo tengo 3 semanas con ella y tengo problemas para navegar con todos los navegadores
un amigo me dijo que descargara malwarebytes, lo ejecute y pues me detecto 8 amenzas:


Windows 7 Service Pack 1 x64 NTFS
Internet Explorer 11.0.9600.16476
New :: NEW-PC [administrator]

Protection: Enabled

1/31/2014 5:37:45 PM
mbam-log-2014-01-31 (17-37-45).txt

Scan type: Full scan (C:\|D:\|)
Scan options enabled: Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken | PUP | PUM
Scan options disabled: P2P
Objects scanned: 334082
Time elapsed: 39 minute(s), 28 second(s)

Memory Processes Detected: 0
(No malicious items detected)

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 0
(No malicious items detected)

Registry Values Detected: 0
(No malicious items detected)

Registry Data Items Detected: 0
(No malicious items detected)

Folders Detected: 0
(No malicious items detected)

Files Detected: 8
C:\Program Files (x86)\Labcenter Electronics\Proteus 7 Professional\MODELS\LCDPIXEL.DLL (Trojan.Agent.ED) -> Quarantined and deleted successfully.
C:\Program Files (x86)\Labcenter Electronics\Proteus 7 Professional\PatchWise.bak\Models\LCDPIXEL.DLL (Trojan.Agent.ED) -> Quarantined and deleted successfully.
C:\Users\New\Documents\Malwarebytes.Anti-Malware.v1.75.0.1300.Multilingual.Final.Incl.Keymaker-FFF\Keygen' s\MalwareBytes.Anti-Malware.1.50.READNFO_KEYGEN-FFF.zip (Dont.Steal.Our.Software) -> Quarantined and deleted successfully.
C:\Users\New\Documents\Malwarebytes.Anti-Malware.v1.75.0.1300.Multilingual.Final.Incl.Keymaker-FFF\Keygen' s\Malwarebytes.Anti-Malware.v1.3.x.Keygen-CORE.rar (Dont.Steal.Our.Software) -> Quarantined and deleted successfully.
C:\Users\New\Documents\Malwarebytes.Anti-Malware.v1.75.0.1300.Multilingual.Final.Incl.Keymaker-FFF\Keygen' s\Malwarebytes.Anti-Malware.v1.50.Keymaker-CORE.rar (PUP.Keygen.Intro) -> Quarantined and deleted successfully.
C:\Users\New\Documents\Malwarebytes.Anti-Malware.v1.75.0.1300.Multilingual.Final.Incl.Keymaker-FFF\Keygen' s\Malwarebytes.Anti-Malware.v1.50b.Keygen-RED.zip (Dont.Steal.Our.Software) -> Quarantined and deleted successfully.
C:\Users\New\Documents\Malwarebytes.Anti-Malware.v1.75.0.1300.Multilingual.Final.Incl.Keymaker-FFF\Keygen' s\Malwarebytes_.Anti-Malware.v1.46.Keygenerator-iNF.zip (Dont.Steal.Our.Software) -> Quarantined and deleted successfully.
C:\Users\New\Documents\Malwarebytes.Anti-Malware.v1.75.0.1300.Multilingual.Final.Incl.Keymaker-FFF\Keygen' s\Keygen-Ptrick\patrick.exe (Dont.Steal.Our.Software) -> Quarantined and deleted successfully.

(end)

Porfavor alguien ayudeme