Something is definitely borked on your end, Dedres.
You do have a tunnel for your miner through any sort of firewall you're running?
No FW is running on the computer but there may be some filter on the ISP side. I don't really know how to check that.
BTW, here's the info from the GPU. I realized the device is actually 6760 while the name says 7400M series. Not sure if it makes any difference.
Name AMD Radeon HD 7400M Series
PNP Device ID PCI\VEN_1002&DEV_6760&SUBSYS_161E103C&REV_00\4&2179970E&0&0008
Adapter Type ATI display adapter (0x6760), Advanced Micro Devices, Inc. compatible
Adapter Description AMD Radeon HD 7400M Series
Adapter RAM 1.00 GB (1,073,741,824 bytes)
Installed Drivers aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Driver Version 14.200.0.0
Driver c:\windows\system32\drivers\atikmpag.sys (8.14.1.6387, 544.00 KB (557,056 bytes), 5/23/2014 4:11 AM)