Some Difficulty Booting After Installing New Power Supply

I recently installed a new power supply. My whole experience with this power supply is relatively new.

But, about 1/3 of the time the computer has failed to boot. Instead, it hangs on a screen with the HP logo.

On the HP website, there was a step by step guide that guides users through troubleshooting steps. When I followed those, it revealed that unplugging some of the USB devices and re-powering did the trick.

Since this is only the second time that I have run into problems, I might not have all of the data that we need to figure things out.
the first time that I ran into the issue, I don't remember exactly which USB devices I had to unplug.
the second time that I ran into this issue, I had to unplug my Logi/ Logitech M570 (a trackball) and my Steam Controller. I think I first unplugged the Logi M570 but that did not do the trick alone.

I wonder if it's also possible that it's just the sheer number of devices that's causing the problem. I have 3 mouse devices (the 2 that I already mentioned plus a Thinkpad trackpoint keyboard).

Power supply is a Corsair CX450

I have an HP Pavilion 500-336 upgraded with
Sandisk SSD 500 gb (original HD as secondary)
MSI Radeon R7 240
Adata 8GB ram

 

Why did you replace the PSU in the first place? Were you having similar issues?

I would plug in one USB keyboard and one mouse and that's it for USB devices, then see if it boots fine. If not, then your Corsair may be bad too. It happens.

 

Thank you. I replaced the power supply for 2 reasons:
1- Someone had suggested that I do so because of my video card. The video card manufacturer recommends a 400 W power supply. While I disagree that a video card manufacture knows enough to say something like that (they obviously are not aware of your full system), I felt as though my hardware upgrades were starting to dictate an upgrade (video card upgrade, 1 hard drive and 1 SSD). I think HP builds very cheap (basically no bay expansions available, inside of case is cramped) so I don't expect that the power supply is well equipped to handle much more than the components that the computer ships with.

2- I have read that power issues can cause data corruption. I would rather pay more for a larger power supply to run than to face the issues.

Edit:
booted with the thinkpad keyboard and steam controller - doesn't work
booted with the thinkpad keyboard and the logitech trackball - doesn't work

Next, i will have to try just the steam controller and just the logitech trackball.

 

It is true, they are guessing. But it is also true the graphics solution is often the most power hungry device in our computers - often way more hungry than the CPU. So no doubt they recommend generous supplies, but it is for good reason.

Power issues cause sudden system crashes and yes, any time a system crashes, it can corrupt the data on the drives.

Most factory made computers come with supply barely capable of supporting the hardware they come with. So yes, it is common to need a bigger supply if you want to upgrade.

I see no need for further swapping. Try just the keyboard and trackball (or mouse if you have one). Better yet, try a different keyboard and mouse and see what happens. Forget about the controller for now - you need a keyboard and mouse.

And don't forget to try a different PSU. Note that the CX series from Corsair is the next to the bottom line of PSUs.

 

Thanks.
I tried a bunch of different combinations of usb devices.

The following rules seem to apply:
1- can only have 1 usb device connected
2- the usb device must be wired (trackball and steam controller are wireless).
I even tried 2 wired USB devices (thinkpad trackpoint keyboard and a regular keyboard).

The power supply that I had in there before this one was definitely not having these issues. So, it seems like we can conclude that there is some sort of an issue with this power supply.
This was already an RMA (the first one would not provide any power at all). I guess I will start the RMA process.

 

One way to maybe explain what is going on, is that the power supply can't deliver enough power. As part of the boot process, maybe several devices need a lot of power basically all at once and there is not enough, causing some kind of a crash in the boot process.
Of course, I really don't know, and I am doing little more than guessing.

 

Always something to consider but with the listed components, it is not likely since that GPU is not a very hungry one so decent 450W supply would be plenty. This assumes, of course, the supply is functioning properly, and no connected devices is attempting drawing more power than it should.

 

Hmm.. I guess I should get this thing out of my comp; if it's malfunctioning that can't be a good thing. It's too much work moving power supplies in and out of these HP computers Maybe I can get Corsair to upgrade me to the higher end line but only 400W.

One thing that could pay off over time is a device that measures the wattage being used. It would be useful to collect that data (a graph during boot process, etc), to figure out what actual power supply you need. Related to what you were saying, could also detect if one device is using more power than it should use.

 

A simple software program, like iobit Advanced System Care gives you a performance Monitor, with icons telling you cpu and Ram usage,-so it would be possible to watch its variation as you add connections etc:
http://www.majorgeeks.com/files/details/advanced_systemcare.html

 

Ok. I didn't think of ram useage translating too much into power usage. But, I suppose the cpu usage translates into power usage. But, good thinking, it didn't occur to me to approach it from that angle.
I am thankful for the posters on this site. I have learned a lot from you all.