Why my computer won't turn on sometimes

[MidnightBlue]

I turn on my computer today..its works fine no problem....what happen to my computer T_T

What is this?

I turn on my computer today and itsworks fine.

 

[Arjai]

https://www.howtogeek.com/howto/windows-vista/what-is-dwmexe-and-why-is-it-running/

 

[Hood]

Desktop Window Manager, which enables the use of hardware acceleration to render the graphical user interface of Windows. First used in Vista, enables the "Windows Aero" user experience, which allowed for effects such as transparency, 3D window switching and more. You should run System File Checker, instructions here - https://support.microsoft.com/en-us...er-tool-to-repair-missing-or-corrupted-system.

 

[MidnightBlue]

Desktop Window Manager, which enables the use of hardware acceleration to render the graphical user interface of Windows. First used in Vista, enables the "Windows Aero" user experience, which allowed for effects such as transparency, 3D window switching and more. You should run System File Checker, instructions here - https://support.microsoft.com/en-us...er-tool-to-repair-missing-or-corrupted-system.

thanks you sir

 

[eidairaman1]

Probably some weird update...

 

[MidnightBlue]

When it won't turn on. Try to unplug the PSU from the wall for 15 min then plug back in. If that fixes it then get a new PSU

sir i did what u said and its work..so what PSU should i need to buy???

 

[Jetster]

That would depend on your case, where you live and how cheap you are

 

[jsfitz54]

I tried to turn it on just using mobo and psu and dont turn on...but i tried 2 different psu..

Are you sure it is the PSU? You said in Post # 10 that you tried 2 different ones? Both could be bad, yes?

 

[MidnightBlue]

That would depend on your case, where you live and how cheap you are

what wattz sir?im using 250 before now and changed it to 230 wattz
and when something not usually happen i back my it to my old psu

Are you sure it is the PSU? You said in Post # 10 that you tried 2 different ones? Both could be bad, yes?

yes sir your right i used 2 different psu but i did what he said and its work..

 

[Jetster]

Get a quality PSU like the Corsair CX430. Where you live and is it a standard case

 

[sepheronx]

I am assuming you are from another country outside the western world, possibly India?

Anyway, if that is the case and money may be of an issue, have you tried your PSU in another machine? If you are familiar with electrical, you could always try, when machine is running, to test to see what voltages you are getting from your PSU:

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158
https://www.wikihow.com/Check-a-Power-Supply

I used to do this often to test PSU's to make sure they have correct voltages for 5pin and 24pin connector. If a PSU is rather problematic, it could possibly show by the voltage output (12v may be showing below 11.5v which can be a problem as example).

Next - while I say your machine wont draw too much power, 250w and 230w are cutting it rather close. Its always good to make sure, if your system configuration allows (case size, etc) for around 400W or more, get it. If $ is an issue, then it may not be a bad idea to get a power consumption meter: https://www.ebay.com/p/Power-Consum...ty-Usage-US-Plug/17015866819?iid=282362344658

to at least monitor how much your system is consuming in power. Great idea as an investment for even the future to always get a good idea what your system requires and is drawing (I may be wrong but I believe the PSU could be drawing more power than what overall computer is actually using but regulated by the PSU itself when the power reaches from socket to the PSU. I could be wrong though).

If you tried 2 different PSU's for it, then the other people may be right in saying it could be the motherboard is bad. Now both PSU's you tried are rather very low overall wattage, and I am assuming they are just standard bronze rated PSU's (a fancier advertisement for standard PSU of 80+ efficiency)? If you got an old system laying around somewhere that shares the same connectors (too old of machines though, older than Socket A or 754 usually have a different PSU layout on the 20pin connector) give it a try. If no issue, then the PSU's are fine. If issue, PSU are an issue.

After throwing your config here: http://www.coolermaster.com/power-supply-calculator/

It shows that its power draw is around 247W.

As others have said, do an inspection of the motherboard. Check the capacitors. See if there is any bulging or brown stain appearing on them. While typing all this out, I just realized you did mention that you heard a buzzing sound. That could very well be a bad connection somewhere or short. Have you tested the unit outside of the computer case - as in, trying to run this unit on a table?

Edit: TL/DR:

- 250W PSU is cutting it real close. According to some online PSU calculators, your machine draws around ~247W. So a 300W or more may be better option.
- If system isn't drawing too much power and these calculators are off, then try running the machine outside of the case and on a non metallic surface (obviously) to test to see if there was a short. Seeing as how you said there is a static sound sometimes when powering on.
- Physically inspect motherboard to see if there are any bad capacitors or connections or possibly any kind of damage (especially on the circuit connections themselves).
- Try another, higher wattage PSU just in case (if you can).

 

[BadFrog]

Okay,

I think I solved the problem over the last few days and the info from the OP today.

View attachment 102923

what wattz sir?im using 250 before now and changed it to 230 wattz
and when something not usually happen i back my it to my old psu


yes sir your right i used 2 different psu but i did what he said and its work..

https://www.geforce.co.uk/hardware/desktop-gpus/geforce-gtx-750-ti/specifications

I asked the OP for specs of the computer a few days ago and they replied with a SS of speccy.

Today, OP mentioned that he's running a 250w and 230w PSU and does not list any specs of the PSU. I just quickly checked and the nVidia 750 Ti needs a MINIMUM of 300w PSU. I'm sure the OP could of had it running with a 250w but as previously mentioned @sepheronx that 250w is cutting it close.


OP can you please try a 300w PSU? Does your 750 Ti need a PCIE Connector? If so, please make sure it's rated for 20amps on the 12v rail.



TL;DR NEED 300W PSU MINIMUM

 

[bogmali]

Get a quality PSU like the Corsair CX430. Where you live and is it a standard case

Should be able to since OP is from Seoul, South Korea where PC gear is widely available.

 

[eidairaman1]

Should be able to since OP is from Seoul, South Korea where PC gear is widely available.

It should be now unlike 2005

 

[BadFrog]

Should be able to since OP is from Seoul, South Korea where PC gear is widely available.

How do you see this information? Or only moderators/admins can see this? I have a friend who's fluent in Korean and we prob could of wrapped this up on the first day lol

 

[bogmali]

How do you see this information? Or only moderators/admins can see this? I have a friend who's fluent in Korean and we prob could of wrapped this up on the first day lol

Mods/Admins only

 

[TheoneandonlyMrK]

With this kind of issue the First thing to test is the on off button? Find it's cable on the motherboard and remove it's two pin plug , then use a terminal driver to switch it on and off, if it works it's obviously the switch or its the psu or mobo switches fail often though im on my third with my listed case.

 

[Hood]

With this kind of issue the First thing to test is the on off button? Find it's cable on the motherboard and remove it's two pin plug , then use a terminal driver to switch it on and off, if it works it's obviously the switch or its the psu or mobo switches fail often though im on my third with my listed case.

I'm betting it's the PSU. I have revived many PCs, and about half the time, the power supply is what the problem was. A couple times the PSU was outputting correct volts on all rails, but wouldn't start the system because of a bad PG (power good) circuit. I have never found a case power button to be bad. The PSU he had, and the one he swapped in, were both minimal OEM units with barely enough watts to run the system and video card. He says it works now, but his problem is not really fixed. @Jetster had the best advice, get a new 400+ watt PSU. He needs one anyway.

 

[27MaD]

Try to put the PC on a table or on a flat surface don't put it on something like carpets , it could be static shipments .

 

[MidnightBlue]

Now my computer totally wont turning on..but this is what i did and its turning on but no display on monitor

But when i take it off and switch on and off its not turning on..but there is a sound like static sound but im not sure if that cames from mobo or psu.

 

[27MaD]

Now my computer totally wont turning on..but this is what i did and its turning on but no display on monitor

But when i take it off and switch on and off its not turning on..but there is a sound like static sound but im not sure if that cames from mobo or psu.

sounds like your power supply isn't enough or maybe it's failing , buy a new one before this one hurts your PC parts .

 

[RCoon]

You've been given advice and not tried it. If you continue to ignore advice, people will simply stop caring and not bother helping in future.

 

[jsfitz54]

2 Junk, OLD, 230w and 250w PSU's that he is fighting to keep. Won't listen.

Please close thread after 2 pages of nonsense.

 

[eidairaman1]

Now my computer totally wont turning on..but this is what i did and its turning on but no display on monitor

But when i take it off and switch on and off its not turning on..but there is a sound like static sound but im not sure if that cames from mobo or psu.

GO GET A NEW 350+ WATT PSU. IF IT STILL DOES THE SAME GET A NEW MOTHERBOARD AND START FRESH.

You could have already had this problem fixed if you took it to a shop because they have spare parts and could of saved you money in the long run. WE HAVE TOLD YOU NUMEROUS TIMES TO GET A PSU, STOP JACKING AROUND AND DO SOMETHING OR GET OUT!

 

[Deleted member 163934]

Get a decent 400+ Watt psu. Last time I had a 250 Watt psu was when I had a Celeron 600 Mhz.

Your cpu and gpu consume way more compared to mine. Sure I have 3 more ram sticks, 1 hdd, 1 usb soundcard and 1 pci-e nic but those don't really add that much and I used a 380 W Seasonic psu (in august there will be 10 years since I use it so it was kinda the time to replace it, no signs of problems just the age made me replace it) until recently when I changed it with a 520 W Seasonic one (overkill for my pc but it was the cheapest decent psu I could find) (I have an UPS in front of the PSU for 10 years also, daily there are spikes on the electrical line so there was no other way; isp is losing equipment every year told them to put an ups on their equipement located on stairs (outside my flat), they don't want to listen, it basicaly cost them more to replace 2 times / year the entire equipment...).

The pc probably doesn't start because the 12V rail is basicaly overloaded (at 250 W it has to be a single 12v rail psu) and the voltage you get on the 12V is really low or some protection from the psu (kinda doubt it actually has any) triggers not to burn the psu and the pc just doesn't start.

Hopefully the 2 cheap psu you used so far didn't damaged the motherboard. If the motherboard is damage well next time don't be that cheap with the psu if you care about your pc.