You Can Request The Laptop to be Changed to Windows 10 from Windows 7 if it is Possible to be done on model you Desire at the time of Purchase Thank You 
Model
Brand Lenovo
Model G550(2958-A4U)
Part Number 2958-A4U
Quick Info
Operating System Operating SystemWindows 7 HOME PREM
CPU CPUIntel Core 2 Duo T6600 2.2G
Screen 15.6"
Memory Memory3 GB DDR3
Storage Storage25250 GB SSD
Optical Drive Optical DriveDVD±R/RW
Graphics Card Graphics CardIntel GMA 4500MHD
Video Memory Video MemoryShared memory
Communication LAN and WLAN
Dimensions (W x D x H) 15.00" x 9.60" x 1.00" - 1.40"
Weight 5.95 lbs.
CPU
CPU Type Intel Core 2 Duo
CPU Speed CPU SpeedT6600 (2.20GHz)
CPU L2 Cache CPU L2 Cache2MB
CPU FSB 800 MHz
Chipset
Chipset Intel GM45
Display
Screen Size Screen Size15.6"
Wide Screen Support Wide Screen SupportYes
Resolution Resolution1366 x 768
LCD Features LED backlight
Operating System
Operating System Windows 7 HOME PREM
Graphics
GPU/VPU GPU/VPUIntel 4 SERIES
Video Memory Shared system memory
Graphic Type Graphic TypeIntegrated Card
Storage
SSD 250 GB


Memory
Memory Memory3 GB
Memory Speed DDR3 1066
Memory Spec 2 GB x 1 + 1 GB x 1
Memory Type 204-Pin DDR3 SO-DIMM
Memory Slot (Total) 2
Memory Slot (Available) 0
Optical Drive
Optical Drive Type DVD±R/RW
Optical Drive Interface Integrated
Communications
LAN LAN10/100Mbps
WLAN WLANIntel WiFi Link 5100
Ports
USB USB3
Video Port 1 x VGA
HDMI 1 x HDMI
Audio Ports 1 x Microphone Jack, 1 x Headphone Jack
Audio
Audio Integrated Sound card
Speaker Internal Speakers
Input Device
Touchpad Yes
Keyboard Standard
Webcam WebcamYes
Card Reader 5-in-1 Card reader (MMC, Memory Stick, Memory Stick PRO, Secure Digital Card, xD-Picture Card)
Power
Battery 6-cell Lithium Ion
Dimensions & Weight
Dimensions (W x D x H) 15.00" x 9.60" x 1.00" - 1.40"
Weight 5.95 lbs.