Turned my computer off in preparation for reformatting. Now it will not reboot. If I unplug the power chord from the power supply and then plug it back in I will, for a brief moment get a reaction out of the computer. I can tell it's trying to power up. Fans start spinning but then just stop. I now also notice a very high pitched whine when power is connected. Sorry for lengthy post. Any help is appreciated.
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PC won't power up
- Thread starter Areso
- Start date
hat
Enthusiast
- Joined
- Nov 20, 2006
- Messages
- 21,755 (3.22/day)
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| System Name | Starlifter :: Dragonfly |
|---|---|
| Processor | i7 2600k 4.4GHz :: i5 10400 |
| Motherboard | ASUS P8P67 Pro :: ASUS Prime H570-Plus |
| Cooling | Cryorig M9 :: Stock |
| Memory | 4x4GB DDR3 2133 :: 2x8GB DDR4 2400 |
| Video Card(s) | PNY GTX1070 :: Integrated UHD 630 |
| Storage | Crucial MX500 1TB, 2x1TB Seagate RAID 0 :: Mushkin Enhanced 60GB SSD, 3x4TB Seagate HDD RAID5 |
| Display(s) | Onn 165hz 1080p :: Acer 1080p |
| Case | Antec SOHO 1030B :: Old White Full Tower |
| Audio Device(s) | Creative X-Fi Titanium Fatal1ty Pro - Bose Companion 2 Series III :: None |
| Power Supply | FSP Hydro GE 550w :: EVGA Supernova 550 |
| Software | Windows 10 Pro - Plex Server on Dragonfly |
| Benchmark Scores | >9000 |
Try taking these steps:
Completely drain the computer of any power that may be lingering in capacitors and such. Unplug the PC from the wall, and hold the power button in for a few seconds. At this time, maybe try resetting the CMOS by changing the jumper position and/or pulling the CMOS battery for a short amount of time and holding the power button again for a few seconds.
Try reseating everything. Cords, plugs, components. There may be a loose connection somewhere.
Completely drain the computer of any power that may be lingering in capacitors and such. Unplug the PC from the wall, and hold the power button in for a few seconds. At this time, maybe try resetting the CMOS by changing the jumper position and/or pulling the CMOS battery for a short amount of time and holding the power button again for a few seconds.
Try reseating everything. Cords, plugs, components. There may be a loose connection somewhere.
- Joined
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| System Name | Ryzen 2023 |
|---|---|
| Processor | AMD Ryzen 7 7700 |
| Motherboard | Asrock B650E Steel Legend Wifi |
| Cooling | Noctua NH-D15 |
| Memory | G Skill Flare X5 2x16gb cl32@6000 MHz |
| Video Card(s) | Sapphire Radeon RX 6950 XT Nitro + gaming Oc |
| Storage | WESTERN DIGITAL 1TB 64MB 7k SATA600 Blue WD10EZEX, WD Black SN850X 1Tb nvme |
| Display(s) | LG 27GP850P-B |
| Case | Corsair 5000D airflow tempered glass |
| Power Supply | Seasonic Prime GX-850W |
| Mouse | A4Tech V7M bloody |
| Keyboard | Genius KB-G255 |
| Software | Windows 10 64bit |
That's what happened to me.Something was loose, even at the slightest bump of the table the PC would restart. Managed to fix it today. Once I sneezed while sitting at the table and the PC restarted I was so pissed.
Could you Areso fill in you system specs so we can know what power supply and motherboard you have?http://www.techpowerup.com/forums/members/areso.154453/
hat
Enthusiast
- Joined
- Nov 20, 2006
- Messages
- 21,755 (3.22/day)
- Location
- Ohio
| System Name | Starlifter :: Dragonfly |
|---|---|
| Processor | i7 2600k 4.4GHz :: i5 10400 |
| Motherboard | ASUS P8P67 Pro :: ASUS Prime H570-Plus |
| Cooling | Cryorig M9 :: Stock |
| Memory | 4x4GB DDR3 2133 :: 2x8GB DDR4 2400 |
| Video Card(s) | PNY GTX1070 :: Integrated UHD 630 |
| Storage | Crucial MX500 1TB, 2x1TB Seagate RAID 0 :: Mushkin Enhanced 60GB SSD, 3x4TB Seagate HDD RAID5 |
| Display(s) | Onn 165hz 1080p :: Acer 1080p |
| Case | Antec SOHO 1030B :: Old White Full Tower |
| Audio Device(s) | Creative X-Fi Titanium Fatal1ty Pro - Bose Companion 2 Series III :: None |
| Power Supply | FSP Hydro GE 550w :: EVGA Supernova 550 |
| Software | Windows 10 Pro - Plex Server on Dragonfly |
| Benchmark Scores | >9000 |
I had a Pentium 4 system one time that for some reason wouldn't boot after... something (I forget what I did that caused it but it seemed to be reproducible). It would not boot until I reseated the IDE cables I think it was, for some odd reason...
First in a PS there is a Crow bar. This circuit is to shut the PS down if there is a over current situation. They whine when triggered, you hear is the switching circuit running in the lowest power mode causing one of the components to 'sing' .
So for a simple explanation.. Something is shorted or overloading one of the rails. ie the 3.3,5,12 volt lines. A hard drive or mother board are usual problems. Once and awhile a vid card. So unhook your hard drive and vid card.. if the computers tries to boot, ie on screen you get a no drive detected or you get beeps for no vid card AND the puter doesn't shut down then plug the vid in and reboot.. if it stays running then turn off and plug in the hard drive/s and reboot . if it doesn't you found your problem child
So in regard to this if I do both of those steps and the problems persists you were implying that it's the power supply?
No, most likely is something is dead outside of the PS.. Yes I have seen a PS short inside and do this kind of thing however it is USUALLY something else. last time for me it was the motherboard that died. The biggest cause i have seen is the HD then MB then VID then MEM then CD/DVD then other boards like audio or add in specialty boards. Thats why i suggest that you unhook vid and HD.. then try to see if the puter stays on. if it does even with beeps for vidio, then hook up video after you turn off the power to the puter, if it comes up and says it cant boot as hd is still unhooked then its prob not video. Hook up hd. if problem returns then its hd.. if it keeps shutting down with both vid and hd unhooked it prob is cpu/mother board related/mem related.
note make sure you dont have and external drive or other power hungry devices hooked to usb during testing.
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