HELP.... My Lappy has lost its Wifi....

"The Dependency Service or Group Failed to Start."
Running Vista with New Trend internet Security.
Uninstalled Trend after Black Screening..
Done a Startup Repair and chkdsk.
Up and running but no WiFi.....??
Restore does nothing.
Tried all netfixes. No luck.
I have a Dell Inspiron 1520?
No Vista Disk. Who has one of those...?
Any Advice before it becomes an artificial reef off Grange...
Still a good laptop. I watch movies that I download to USB on it.
Running Vista with New Trend internet Security.
Uninstalled Trend after Black Screening..
Done a Startup Repair and chkdsk.
Up and running but no WiFi.....??
Restore does nothing.
Tried all netfixes. No luck.
I have a Dell Inspiron 1520?
No Vista Disk. Who has one of those...?

Any Advice before it becomes an artificial reef off Grange...

Still a good laptop. I watch movies that I download to USB on it.