1.  Mr. RAJ’s Computer Repair I & II: A+ ESSENTIALS Contact: 301.802.9066 Email: Rajeev8989@live.com Online Exams: www.Classmarker.com Designed and prepared for Mr. Raj Students Only at Career Technical Institute [Confidential] Note: Do not copy or distribute without Mr. Raj’s Authorization! 1

2. Under The Hood 2

3.  Mr. RAJ’s Computer Repair I & II: A+ ESSENTIALS Contact: 301.802.9066 Email: Rajeev8989@live.com Online Exams: www.Classmarker.com Designed and prepared for Mr. Raj Students Only at Career Technical Institute [Confidential] Note: Do not copy or distribute without Mr. Raj’s Authorization! 3

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7. 7 Under The Hood Well before we get our hands wet and enter the inside of pc, we need to control ESD

8.  Mr. RAJ’s Computer Repair I & II: A+ ESSENTIALS Contact: 301.802.9066 Email: Rajeev8989@live.com Online Exams: www.Classmarker.com Designed and prepared for Mr. Raj Students Only at Career Technical Institute [Confidential] Note: Do not copy or distribute without Mr. Raj’s Authorization! 8 Under The Hood Major Components Motherboard Processor Fan PCI Slots AGP Slots RAM Memory Slots On Board NIC & Audio HDD, FDD, CD-ROM USB Power Supply Power Cables Ribbon Cables Switch Assembly PC Speaker

9.  Mr. RAJ’s Computer Repair I & II: A+ ESSENTIALS Contact: 301.802.9066 Email: Rajeev8989@live.com Online Exams: www.Classmarker.com Designed and prepared for Mr. Raj Students Only at Career Technical Institute [Confidential] Note: Do not copy or distribute without Mr. Raj’s Authorization! 9 Under The Hood Air Flow is Important Do nut run PC with the cover open.