What are some ways to solve power-related issues?
- Test PSU with a multimeter
- Replace PSU
- Ensure sufficient wattage
- Try a different electrical plug
- Try PSU in a different unit
What are common problem motherboard/CPU symptoms?
- Post beeps/messages/light indicators
- Blank screen upon boot
- Blue screen (BSOD)
- Random reboot/shutdown
- Overheating CPU`
How are some ways to solve Motherboard, CPU, RAM issues?
- Replace faulty components
- Disable CPU overclocking
- RAM test
- Replace CMOS battery for BIOS
- Log entries related to hardware failure
Does storage media last forever?
No, back up your data!
Why would HHDs fail before SSDs?
HDDs have mechanical components
What are some common storage-related symptoms
- Failure to read or write to disk
- Clicking/grinding noise
- Slower than usual disk performance
- Disk drive not recognised
- Bootable devices, OS not found
- RAID not found
What is S.M.A.R.T?
Self monitoring analysis and Reporting Technology. Firmware in disk drives that provides LED display messages about status of disks
What are some ways to solve storage related issues
- RAID array verification and repair
- Replace failed disks
- Test network storage
- OS disk volume diagnostics
- Ensure cables are plugged in
What are some ways to solve display related issues
- Test a different cable/monitor
- Adjust physical monitor controls
- Check temperature
- Update/rollback driver
- Check video settings
- Check input source
What could happen if there’s a incorrect/corrupt driver for a printer?
Jumbled printing (printing unreadable text)
How can we solve some common Printing issues
- Use the correct paper type
- remove debris in paper feed path
- Connect through a wired connection
- Replace fusing assembly
- Replace toner cartridge
- Clean imaging drum
What is port flapping?
Port flapping is when a switch port rapidly switches between stands ‘up’ (active) and ‘down’ causing intermittentness connections
What can cause limited network connectivity?
- Network congestion
- Loose cables
- External interreference (EMI)
- IPv4 APIPA (LAN only) address with 169.254
- IPv6 link local address with FE80 prefix
- IP address conflicts
- Permission issues
What are some network troubleshooting commands?
- ipconfix
- ip address show, ifconfig (LINUX)
- ping, ping6
- tracert, traceroute
- nslookup, dig
What affects Wi-Fi connectivity?
- Low RF signal (distance)
- Interference
- Hidden SSID
- MAC address filtering
- Authentication server unavailable
- Expired client PKI certificate
What is SSID?
Wireless network name for wireless networks (Wi-Fi)
What is the windows memory diagnostic tool used for?
Checks computer’s RAM for hardware faults that may cause freezing or crashing
What is the windows task scheduler used for?
Automates recurring tasks, such as planning maintenance
What does ipconfig /flushdns do?
Flushes DNS cache that may hold invalid or expired entries
What does an ARP table do?
Deals with MAC-to-IP mappings
What is ghosting and how can we fix it?
Where faint duplicate images appear on a page. Replace drum unit
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Networking104
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Networking Hardware26
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Network Types16
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Protocols for Wireless Networking57
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Networked Hosts and their Services26
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Network Troubleshooting Tools11
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Basic Home and Small Business Network11
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Laptop Hardware and Components14
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Mobile Device Displays16
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Accessories and Ports38
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Network Connectivity11
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App Support and Synchornization21
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Internal Hardware Components55
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Cables, Interface Connectors. and Power62
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Storage and Memory50
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Printers and multifunction devices15
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The Troubleshooting Methodology12
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Solving common issues21
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Port Revision16
