CLASS 1 TUESDAY, JAN 3RD
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1 Don t Panic! An Introduction to. Fixing & Preventing Computer Problems CLASS 1 TUESDAY, JAN 3 RD Computer Basics Startup Problems Hardware Maintenance Ange Rapa January 2018
2 Don t Panic! An Introduction to. Fixing & Preventing Computer Problems CLASS 2 THURSDAY, JAN. 4 TH The OS (Windows) The Internet Intro to Malware CLASS 3 TUESDAY, JAN. 9 TH Dealing with Malware PC Maintenance Internet Security
3 Goal: To prevent panic when 1. Your computer fails to start 2. The operating system (Windows) fails to launch 3. The computer crashes or freezes often 4. Strange things happen (desktop Icons disappear) 5. Your computer slows to a crawl 6. You believe your computer has been hacked 7. A dire warning appears saying a) your computer is virus infected. Call b) your files have been encrypted. Pay
4 The Basics
5 A Simple Digital Computer ON OFF SWITCH (command) RESULT
6 Computer Switch = BIT (bit of data) 0 1 ON 0 1 OFF
7 BITS & BYTES 1 0
8 BITS & BYTES 1 0
9 Bit/Switch Technology Evolution smaller faster less energy higher performance 1940 s 1970 relay vacuum tube transistor Integrated circuit (IC)
10 Intel Processor (CPU) Technology Year & Model Transistor Count Mfg. Technology ,300 1 st CPU on a chip 10 um (micron) ,000 1 st IBM PC Aug um 1993 Pentium 3,100, nm (nanometer) 2000 Pentium 4 42,000, nm 2006 Core 2 Duo 291,000, nm 2010 Core i7 1,170,000, nm 2017 Core i7 (8 th generation) 5,000,000,000 (est.) 14nm
11 Scanning Electron Micrograph Current Mfg. Technology: 14 nm Cross-sectional Diagram Transistor (BIT)
12 14 nm mfg. technology: > 5,000 transistors fit the width of a human hair
13 SOFTWARE programs applications apps
14
15 Computer Servers (hardware) DATA CENTERS (The Cloud)
16 Net 1. Computers are getting better at fixing themselves. 2. Software is continually improving and becoming more trouble-free.
17 Display* Tower* PC Hardware Mouse* Peripherals Printer / Scanner Modem* Router external drives web cam* Keyboard* *built into laptop computers
18 Computer Architecture defined in 1945 (CPU) Keyboard Mouse (RAM) Display Hard Drive Printer John Von Neumann
19 Power Supply (PSU) Case Motherboard Processor (CPU) Memory (RAM) Hard Drive (HDD) Key PC Components 1. Processor (CPU) logic chip where calculations are performed. 2. Memory (RAM) used to temporarily hold programs and files for processing 3. Hard Drive (HDD) used to permanently store programs and files 4. Motherboard circuit board housing components and circuits for other functions. 5. Power Supply (PSU) supplies power to all tower components.
20 Processor (CPU) Power Supply (PSU) Motherboard Processor (CPU) Memory (RAM) Hard Drive (HDD) Key Specs: Operating frequency (e.g. 3.5 GHz) Version (Intel i3, i5, i7; AMD Ryzen 3, 5, 7) Technology (Intel 8 th Gen; AMD Ryzen) No. of Cores (2,4, etc.)
21 Memory (RAM)* = The Blackboard Power Supply (PSU) Motherboard Key Spec: No. of BYTES (4 GB, 8 GB, etc.) Processor (CPU) Memory (RAM) Hard Drive (HDD) * Radom Access Memory
22 Hard Drive = Storage = The File Cabinet Power Supply (PSU) Motherboard Hard Disk Drive (HDD) Processor (CPU) Memory (RAM) Hard Drive (HDD) Solid State Drive (SSD) Key Spec: Quantity of BYTES (1 TB, 2 TB, etc.)
23 Power Supply and Motherboard When plugged into a wall outlet the power supply continuously applies power to motherboard. Power Supply (PSU) The motherboard contains circuits that support other components and peripherals. INPUT keyboard mouse webcam microphone Motherboard Processor (CPU) Memory (RAM) Hard Drive (HDD) OUTPUT display printer speakers INPUT & OUTPUT network touchscreen display drives (HDD, SDD, flash)
24 Power Supply (PSU) Motherboard Processor (CPU) Memory (RAM) Hard Drive (HDD) Startup Sequence (boot up) 1. Power on sends a signal to the motherboard to begin the start up process. 2. Power On Self Test (POST)* checks all hardware and places it in a ready-to-go state. 3. Operating System (Windows) is copied from the hard drive to memory. 4. Welcome / logon screen appears. 5. Icon-populated desktop screen; ready for work. * BIOS (basic input-output system)
25 Logo Screen During POST
26 Windows 10 Desktop Screen
27 Mac Desktop Screen
28 What if the PC doesn t boot up? Don t Panic!
29 Power Supply (PSU) Motherboard Processor (CPU) Memory (RAM) Hard Drive (HDD) 1. Power on sends a signal to the motherboard to begin the start up process. 2. Power On Self Test (POST)* checks all hardware and places it in a ready-to-go state. 3. Operating System (Windows) is copied from HDD to RAM 4. Welcome / logon screen. 5. Desktop screen Startup Sequence * BIOS (basic input-output system)
30 POST Failure Troubleshooting Possible Cause Simple things to try No power Check: power cables, switches (incl. PSU), power strips, display input, etc. Failure to complete POST Static charge buildup (laptops) Dust buildup, Internal short, PSU Unplug power cord. Unplug all USB external hardware except monitor, keyboard & mouse. Plug in power cord and restart. Unplug power cord and remove battery. Press and hold down power button for 30+ seconds. Plug in without battery and restart. Clean inside the computer case.
31
32 Key PC Components (inside the case) Power Supply Hard Drive Motherboard Memory CPU, fan and heat sink
33
34 Video Postscript Swiffer dust cloths may be used in place of alcohol. Removal of both side panels is not necessary. Air compressor, vacuum cleaner may be used. Focus on power supply and CPU heat sink areas.
35
36
37 Just Kidding!
38
39
40 Basic Laptop Care and Maintenance 1. Use laptop on flat surfaces keeping ventilation openings clear. 2. Keep pets away from laptop when powered up and running. 3. Use canned (compressed) air to clean all ventilation grilles and ports.
41 Power Supply (PSU) Motherboard Processor (CPU) Memory (RAM) Hard Drive (HDD) Windows Boot-up Failure 1. Power on sends a signal to the motherboard to begin the start up process. 2. Power On Self Test (POST)* checks all hardware and places it in a ready-to-go state. 3. Operating System (Windows) is copied from hard drive to memory. 4. Welcome / logon screen appears. 5. Icon-populated desktop screen * BIOS (basic input-output system)
42 Failure messages after POST Probable hard drive failure Reboot and select proper Boot device or insert Boot Media in selected Boot device and press any key. hard drive failing or corrupt Windows file NTLDR missing.
43 Windows 10 Logon Screen
44 Don t Panic! An Introduction to. Fixing & Preventing Computer Problems CLASS 2 THURSDAY, JAN. 4 TH The OS (Windows) The Internet Intro to Malware CLASS 3 TUESDAY, JAN. 9 TH Dealing with Malware PC Maintenance Internet Security
Define each of the following computer terms. 1 Period 7 Lesson Computer Terms 1 Wallpaper 2 URL 3 Mainframe 4 Function Keys 5 Font 6 Paste 7 Paint
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User s Manual No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in
B75MU3B 6.x. Intel Core i7 LGA 1155 Processor. Intel Core i5 LGA 1155 Processor. Intel Core i3 LGA 1155 Processor. Intel Pentium LGA 1155 Processor
B75MU3B 6.x Socket LGA 1155 Supported the Intel 3rd and 2nd generation Core i7 and Core i5 processors Supported 2 DIMM of DDR3 1600/1333/1066MHz Supported USB 3.0 Supports BIO-Remote 2 Technology Supports