- Aug 10, 2018
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I recently built a new PC (my first build in nearly 5 years, as such please forgive me if I use the wrong terminology for some stuff) and when I went to power it up, it turned on, then immediately powered back off. The fans spun for about half a second then began winding right back down again. After some basic troubleshooting (unplugging everything except CPU and Motherboard PSU cables, trying to boot with both one stick of RAM and no RAM at all, etc) and what I've found is:
When the CPU connector is plugged in (2 4-pin connectors plugging into the 8 socket hole on the mobo), starting up will turn into the problem I just described. When it is not plugged in, the PC will boot, beep continuously through the speaker (one long beep repeated over and over, could not find the beep code for that in my MOBO manual or online), and then the case lights will start to flicker. This leads me to believe it's a power supply issue, but I'm wary of that because of the CPU cable causing a difference in the boot process. If anyone has had a similar issue or has any advice I'd love to hear it, I'm not really sure where to go from here other than yank the PSU out of my old system and test that (which I'll be doing once I get back from work).
System specs are as follows
Case - Cooler Master SGC-5000W-KWN2 Stryker SE Full-Tower Case
CPU - Intel 7th Gen Intel Core Desktop Processor i7-7700K
CPU Cooler - Cooler Master MAM-G1CN-924PC-R1 MasterAir G100M RGB Low Profile CPU Air Cooler Copper Heat Column Technology Ring and Fan
GPU - EVGA GeForce GTX 1070 Ti FTW2 GAMING, 8GB GDDR5
MOBO - ASUS ROG Strix Z370-E Gaming LGA1151 (Intel 8th Gen) DDR4 DP HDMI DVI M.2 Z370 ATX Motherboard
RAM - Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM 3000MHz
PSU - EVGA SuperNOVA 850 G3, 80 Plus Gold 850W, Fully Modular, Eco Mode with New HDB Fan, Includes Power ON Self Tester, Compact 150mm Size, Power Supply 220-G3-0850-X1
Storage - Seagate 4TB BarraCuda SATA 6Gb/s 256MB Cache 3.5-Inch Internal Hard Drive AND Samsung 860 EVO 500GB 2.5 Inch SATA III Internal SSD
When the CPU connector is plugged in (2 4-pin connectors plugging into the 8 socket hole on the mobo), starting up will turn into the problem I just described. When it is not plugged in, the PC will boot, beep continuously through the speaker (one long beep repeated over and over, could not find the beep code for that in my MOBO manual or online), and then the case lights will start to flicker. This leads me to believe it's a power supply issue, but I'm wary of that because of the CPU cable causing a difference in the boot process. If anyone has had a similar issue or has any advice I'd love to hear it, I'm not really sure where to go from here other than yank the PSU out of my old system and test that (which I'll be doing once I get back from work).
System specs are as follows
Case - Cooler Master SGC-5000W-KWN2 Stryker SE Full-Tower Case
CPU - Intel 7th Gen Intel Core Desktop Processor i7-7700K
CPU Cooler - Cooler Master MAM-G1CN-924PC-R1 MasterAir G100M RGB Low Profile CPU Air Cooler Copper Heat Column Technology Ring and Fan
GPU - EVGA GeForce GTX 1070 Ti FTW2 GAMING, 8GB GDDR5
MOBO - ASUS ROG Strix Z370-E Gaming LGA1151 (Intel 8th Gen) DDR4 DP HDMI DVI M.2 Z370 ATX Motherboard
RAM - Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM 3000MHz
PSU - EVGA SuperNOVA 850 G3, 80 Plus Gold 850W, Fully Modular, Eco Mode with New HDB Fan, Includes Power ON Self Tester, Compact 150mm Size, Power Supply 220-G3-0850-X1
Storage - Seagate 4TB BarraCuda SATA 6Gb/s 256MB Cache 3.5-Inch Internal Hard Drive AND Samsung 860 EVO 500GB 2.5 Inch SATA III Internal SSD
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