Please share the troubleshooting steps performed by you. You may check in ‘Device Manager’ if the wireless card is detected or not and if detected is there any exclamation mark, question mark or red X on wireless card. Please follow the steps below:

I have a Dell Inspiron 1545. The hard drive is failing. I purchased a new hard drive from Dell last week. Installed it but keep getting an error stating no hard drive found try resetting the drive. I've reset the drive several times and no luck.

. . and also that I really do not that much about this kind of thing. Specs: Dell Optiplex 755 Intel(R) Core 2 Duo CPU 1.20 GHz, 980 MB of RAM Display Adapter: Intel(R) Q35 Express Chipset Family I have 4GB of RAM coming in the post next week which will promptly be installed.