Hi, for some crazy unknown reason, today when I logged onto my computer, there seemed to be a probelm. My WiFi did not connect automatically to my home network which I had recently added as a favourite network. I typed in the password and it connected. I then went to my network list and noticed that the network had been removed unknowingly, after noticing this, I then tried adding the network manually and guess what, it showed me access denied.
Why is this happening?
I am the system administrator
and it is still showing me access denied. Please help me, reply ASAP 
Why is this happening?



My Computer
System One
-
- Manufacturer/Model
- HP Pavilion dv3510nr Entertainment Notebook PC
- CPU
- Intel(R) Core(TM)2 Duo CPU P7350 @ 2.00GHz
- Motherboard
- Inventec 1505
- Memory
- 4.00GB
- Graphics card(s)
- NVIDIA GeForce 9300M GS
- Sound Card
- IDT High Definition Audio CODEC
- Monitor(s) Displays
- Generic PnP Monitor
- Screen Resolution
- 1280x800
- Hard Drives
- WDC WD3200BEVT-00ZCT0
- Mouse
- Alps Pointing-device
- Keyboard
- Standard 101/102-Key or Microsoft Natural PS/2 Keyboard with