You need to troubleshoot ram issues if your computer doesn't POST. This is different to testing RAM if you computer does POST with something like MemTest86. Either one or all of the RAM sticks can be faulty, or one or all of the Ram slots can be faulty. The best thing to do is to test the RAM in a different known working system, and also to test known working RAM in your existing motherboard. Listening to the beep codes during POST will give you a lot of indication to the problem. Sometimes just cleaning and/or re-seating the RAM can resolve the issue.

Troubleshoot A Computer Series Playlist | Computer Not Turning On | Pc Turns On But No Display On Monitor
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Intro: How To Troubleshoot A Computer That Won'T Turn On - Intro & Computer Turning On Sequence Explained
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Part 1: Troubleshoot A Computer That Won't Turn On - Pt 1: Is It The PC CASE Fault?
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Part 2: How To Troubleshoot A PC Power Supply - Pt 2 How To Test A PSU - Computer Not Turning On
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Part 3: Troubleshoot A Motherboard - Pt 3 Dead PC Or Computer Turning On But No Display On Monitor
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Part 4: How To Test A CPU To See If It Works - Pt 4 Troubleshoot A Processor
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Part 5: Troubleshoot Ram - Pt 5 How To Test Ram If Computer Not Turning On Or PC Turns On But No Display
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Part 6: Troubleshoot A GPU - Pt 6 How To Test A Graphics Card - Computer Turns On No Display On Monitor
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Part 7: Troubleshoot Cables - Pt 7 Computer Not Turning On Or PC Turns On But No Display On Monitor
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Part 8: Computer Turning On But No Display - Pt 8 Troubleshoot A Monitor
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Part 9: Troubleshooting Hard Drive Problems | Pt 9 Computer Turns On But No Display On Monitor
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Part 10: How To Fix Windows 10 Startup Problems | Pt 10 Troubleshoot A Computer Not Turning On
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Time Stamps:

00:28 Troubleshoot Series Intro | Desktop Pc Computer Not Turning On No Display | How A Computer Works
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03:05 Laptop Not Turning on - Flashing Caps Lock Blue Led Light - Ram Issue Quick Easy Fix
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05:40 Mem86+ Memory Test
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06:22 Ram Beep Code Test 1 - Normal Boot Up - 1 Short Beep

07:14 Ram Beep Code Test 2 - No Ram Sticks Installed - 1 Long Beep and 2 Short Beeps

08:17 Troubleshoot Series Part 3 | How To Test A Motherboard | Dead Faulty Motherboard Uncut Parts Swap
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09:39 Ram Beep Code Test 3 - Ram Not Fully Inserted - Same 1 Long Beep and 2 Short Beeps

10:41 Troubleshoot Series Part 1 | Desktop Pc Computer Not Turning On No Display | Computer Case Issues
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15:40 Ram Beep Code test 4 - Faulty DDR3 Ram In System - No Beep Sound Heard

17:29 Ram Beep Code test 5 - No Ram Sticks In System - 1 Intermittent Long Beep

19:36 Final Thoughts And Advice

20:27 Troubleshoot Series Playlist
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