Possible Clues:

• I left in second symbol on screen, a vital element in 1 across 4, 1 down, or 25, in short
• Essential ingredient to make some chips
• Caught foolish criminal element
• Oddly, skill shown by star, one making chips?
• Nonmetallic element used as a semiconductor in transistors
• Lithium company beset by wrong element
• Nonmetallic element used in integrated circuits (in a California valley?)
• What many chips are made of
• Element found in bricks and concrete
• Element of some chips