Solved Windows Defender won't start

My Computer

Computer Manufacturer/Model Number
SALEON model 2.2b
OS
win7 ultimate 32bit
CPU
core2 Extreme QX6850-OCd to 3.15 GHz
Motherboard
ASUS P5G41-M LE
Memory
4 GB
Graphics Card(s)
NVidia 8600 GT
Monitor(s) Displays
23" acer
Hard Drives
one SATA 250GB partitioned equally in half
one SATA 160GB-internal storage
PSU
500W Thermaltake
Case
mini tower

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
iBUYPOWER Computers
OS
Windows 7 Home Premium x64 SP1
CPU
Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
Motherboard
ASUSTeK Computer INC. P8Z68-V GEN3
Memory
G.SKILL Sniper Series 8GB DDR3 1866 (PC3 14900)
Graphics Card(s)
ASUS GTX660 TI-DC2O-2GD5
Sound Card
HT | OMEGA Claro Halo
Monitor(s) Displays
ASUS VE247H Black 23.6" 2ms
Screen Resolution
1920 x 1080
Hard Drives
1TB SATAII/128GB SSD
Case
NZXT Guardian921 Gaming Tower
Keyboard
Razer DeathStalker
Mouse
Razer Naga Hex
Internet Speed
96.71
Antivirus
Microsoft Security Essentials
Browser
Google Chrome
Other Info
speaker: Logitech Z506
Laptop: Lenovo y510p
mousepad:Razer Vespula
mic: Logitech 980186-0403 Silver USB Connector USB Desktop Microphone
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