I need some help. Wifi randomly stops working every now and then for computer only

Efjay97

Commendable
Sep 28, 2016
5
0
1,510
This issue only effects my computer, nothing else. Im my home wifi.
My computer will randomly loose connection every so often and then i have to hit disconnect and reconnect to get it to work again untill it stops working again, but every other device using my wifi is good. I ran a virus scan and no issues, i used ccleaner to clean it up. Ive tried a bunch of suggestions, still nothing. Im using xfinity performance pro tier and this is my speed test result, which is WAY lower than what i should be getting.
Speed Results
DOWNLOAD SPEED
40.5 Mbps
UPLOAD SPEED
5.9 Mbps
Also my gateway:
Model Name
DPC3941T

Vendor
Cisco

Revision
1.0

CM MAC
481D70143291

Firmware
DPC3941_3.0p6s3_PROD_sey

Im using windows 7 ultimate

Anyone have suggestions

Also when my computer wifi stops working, it still shows 4 white bars and is still connected, i manually disconnect and reconnect