Hi,
Hope you can help me. I recently bought a new PSU (Seasonic M12II Bronze EVO 620W) about 3 weeks ago, but suddenly last week my PC won't power on. No lights, nothing. So here are the steps that I did to see what the issue is:
1. Pulled out the PSU and motherboard from the case and connected the 24 pin and 4 pin connectors from the CPU to the motherboard (note that I've removed the other connectors e.g. PCIE, SATA and Molex - my PSU is a full modular type) and used a pin to turn on the Motherboard but no luck.
2. Tried my old power supply (Thermaltake SE 530W) on my Motherboard - everything works!
3. Went to the store where I bought the Seasonic M12II Bronze EVO 620W. They tested it and the PSU works. They advised me to check for loose connectors and try again. So I went home to see if the PSU will work.
4. Upon getting home, I immediately tried the PSU, at first it worked (tested it while the motherboard is not attached to the case and using only the 24 pin and 4 pin connectors) but when I put back the motherboard and PSU in my PC case, the PC still won't power up.
5. Again, I detached the PSU and motherboard to and used the 24 pin and 4 pin connectors but this time the board won't power on as well! So I thought that maybe it was the motherboard that is causing the issue.
6. So I tried my other PSU (Thermaltake) and VIOLA, the Motherboard turned on! So, it's not the motherboard that is causing the problem. So, I decided to return the Seasonic PSU again to the store.
7. When I was on the store, they tested it again, and the PSU is working. This time they attached a highend GPU to the board that they use for testing and the PSU is still working. So I decided to leave the PSU to them so they can do a stress test.
8. Yesterday they called and told me that no issues where found so I decided to get the PSU. When I get home and tried the PSU (again tested it with my Motherboard detached from the casing and using only the 24 pin connector and 4 pin connector) the PSU works. So I thought maybe this will work now. But again, after I put back everything on my case the PSU won't turn on again!
9. Now I told myself, I'll give this one last try, so I detached my board and PSU again, placed it on the table again connect the 24 pin and 4 pin connectors to my motherboard but plugged the power cable to my PSU and use a paperclip to try to power it on. But still, no luck. But suddenly something happened and I thought this may be a hint for this puzzle. When I touched the PSU I got grounded and it was not like the usual ground you feel when you case is grounded. Its quite strong.
10. Last thing, I put back my board to my case and use my old PSU (Thermaltake) which is currently working as of now without any issues.
Now, my question is:
1. Is it possible that there is a ground inside my PSU? (not sure if you get what I mean) that prevents the PSU from powering on? Or there is something faulty with my motherboard?
I'm quite not convinced that there is something wrong with my board since it works perfectly fine with my old PSU.
I'm also suspecting there is a problem with the SATA and Molex connectors from my new PSU or maybe my casing is grounded? but I'm not sure about the case being grounded since no issues where found when using my old power supply which is currently attached to my PC case.
Hoping you can help me with this matter as this can help me replace the PSU. The guys from the store are quite stubborn that they don't want to admit that the problem is with their product and not on my end. Thank you!
Specs:
CPU: FX 4100 (stock)
Motherboard: Gigabyte GA-78LMT-S2
RAM: 2x4gb Kingston PC-1333 (stock)
GPU: Sapphire R9 280X 3GB GDDR5 (stock)
PSU: Seasonic M12II Bronze EVO 620W (not in use) Thermaltake SE 530W (current used PSU)
Casing: Tecware Alpha
Hope you can help me. I recently bought a new PSU (Seasonic M12II Bronze EVO 620W) about 3 weeks ago, but suddenly last week my PC won't power on. No lights, nothing. So here are the steps that I did to see what the issue is:
1. Pulled out the PSU and motherboard from the case and connected the 24 pin and 4 pin connectors from the CPU to the motherboard (note that I've removed the other connectors e.g. PCIE, SATA and Molex - my PSU is a full modular type) and used a pin to turn on the Motherboard but no luck.
2. Tried my old power supply (Thermaltake SE 530W) on my Motherboard - everything works!
3. Went to the store where I bought the Seasonic M12II Bronze EVO 620W. They tested it and the PSU works. They advised me to check for loose connectors and try again. So I went home to see if the PSU will work.
4. Upon getting home, I immediately tried the PSU, at first it worked (tested it while the motherboard is not attached to the case and using only the 24 pin and 4 pin connectors) but when I put back the motherboard and PSU in my PC case, the PC still won't power up.
5. Again, I detached the PSU and motherboard to and used the 24 pin and 4 pin connectors but this time the board won't power on as well! So I thought that maybe it was the motherboard that is causing the issue.
6. So I tried my other PSU (Thermaltake) and VIOLA, the Motherboard turned on! So, it's not the motherboard that is causing the problem. So, I decided to return the Seasonic PSU again to the store.
7. When I was on the store, they tested it again, and the PSU is working. This time they attached a highend GPU to the board that they use for testing and the PSU is still working. So I decided to leave the PSU to them so they can do a stress test.
8. Yesterday they called and told me that no issues where found so I decided to get the PSU. When I get home and tried the PSU (again tested it with my Motherboard detached from the casing and using only the 24 pin connector and 4 pin connector) the PSU works. So I thought maybe this will work now. But again, after I put back everything on my case the PSU won't turn on again!
9. Now I told myself, I'll give this one last try, so I detached my board and PSU again, placed it on the table again connect the 24 pin and 4 pin connectors to my motherboard but plugged the power cable to my PSU and use a paperclip to try to power it on. But still, no luck. But suddenly something happened and I thought this may be a hint for this puzzle. When I touched the PSU I got grounded and it was not like the usual ground you feel when you case is grounded. Its quite strong.
10. Last thing, I put back my board to my case and use my old PSU (Thermaltake) which is currently working as of now without any issues.
Now, my question is:
1. Is it possible that there is a ground inside my PSU? (not sure if you get what I mean) that prevents the PSU from powering on? Or there is something faulty with my motherboard?
I'm quite not convinced that there is something wrong with my board since it works perfectly fine with my old PSU.
I'm also suspecting there is a problem with the SATA and Molex connectors from my new PSU or maybe my casing is grounded? but I'm not sure about the case being grounded since no issues where found when using my old power supply which is currently attached to my PC case.
Hoping you can help me with this matter as this can help me replace the PSU. The guys from the store are quite stubborn that they don't want to admit that the problem is with their product and not on my end. Thank you!
Specs:
CPU: FX 4100 (stock)
Motherboard: Gigabyte GA-78LMT-S2
RAM: 2x4gb Kingston PC-1333 (stock)
GPU: Sapphire R9 280X 3GB GDDR5 (stock)
PSU: Seasonic M12II Bronze EVO 620W (not in use) Thermaltake SE 530W (current used PSU)
Casing: Tecware Alpha
Thank you for your solution!
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