wireless not connecting

I have been trying for days to fix my wireless connection. I have a Linksys Wi Fi router N300 Simplicity (E900). I've followed lots of advice on changing settings. I even reset to factory specs. In the process, somehow my Dell PC now says it's a laptop. My adaptor settings only refer to a wireless connection rather than the SSID (which is broadcasting and says it
says the signal strength is excellent). I've got the feeling I have just enough knowledge to really mess up my computer, but not to fix it. Any help would be appreciated.





Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i5-2300 CPU @ 2.80GHz, Intel64 Family 6 Model 42 Stepping 7
Processor Count: 4
RAM: 6126 Mb
Graphics Card: AMD Radeon HD 6450, 1024 Mb
Hard Drives: C: Total - 940261 MB, Free - 853370 MB;
Motherboard: Dell Inc., 0Y2MRG
Antivirus: Bitdefender Antivirus, Updated and Enabled