Lovatts Crossword And Puzzle Collection...
Crosswords2 mins ago
No best answer has yet been selected by danndeer. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Sounds as though she has disturbed a system panel connector. These are usually in a group situated near the bottom RH corner of the motherboard and accept the group of wires running from the PC case.
Hopefully she took anti-static precautions before she attempted this upgrade and has not caused even more serious problems by not doing so.