lose internet

i'm on internet playing poker at games.com, lose internet connection. start internet thru taskbar, then get connected. this happens day after day. checked with isp provider, nothing wrong on their end. computer connected to modem, i'm wired, wife is wireless. we both lose internet.
have two year old gateway desktop, windows 7, i3processor, intel hd, 1tb hard drive 6gb memory, multi-in-1 reader.

i'm hopeful somebody can solve my problem before i throw this dam thing away.

thank-you very much,
john

using isp provider, test results are;
download; 2489 kbps
upload; 957 kbps
ping; 41ms

very rarely are we both on computer at the same time. wife is on in the am. i'm on in the pm. can be checking emails then lose internet. i'm wired, wife is wireless and we still both lose internet. both compurers are approx. 2 years old, both windows 7 64b. isp provider is at a loss, can't provide answers to our issue. when wife loses internet, she unplugs the router waits a minute and plugs back in and she's good to go.

combo modem/router.
isp came out yesterday to again inspect set-up. they found a crimped wire and fixed it. hopefully that issue is behind us. thanks for your comments.

with fingers crossed,
john