Hi, N5050, dell sent me the reinstallation disk,since reinstalling the disk I have major problems,firstly the utilities disk was outdated so I went to the website and did a diagnosis of what I needed, but here are the problems

this is recurring quite often, pc crashes, I get a blue screen and then a black screen that says

1. Realtek PCIe FE Family Controller Series v1.24 (10/07/10) PXE-E61: Media test failure, check cable. PXE-MOF: exciting PXE rom  reboot and select proper boot device or insert boot media in selected bot=ot device and press any key

I have tried the dell diagnostic website, it gets 3/4 way through the scan and crashes, I have tried the on board diagnostics but again it crashes half way through,

Any advise would be truly grateful

thank you so much